{
  "locale": "en",
  "theme": "elements",
  "title": "Elements",
  "subtitle": "Chemical Elements",
  "description": "Explore all 118 chemical elements, from hydrogen to oganesson. Use symbols, atomic numbers and scientific facts to solve each crossword.",
  "rules": [
    "Answers are full English element names, not chemical symbols.",
    "Use the spellings in this word list, including aluminium, caesium and sulfur.",
    "All 118 elements appear in the word list; names longer than nine letters do not fit the 9×9 grid."
  ],
  "words": [
    {
      "answer": "HYDROGEN",
      "display": "Hydrogen",
      "level": 1,
      "clue": "Lightest element, symbol H",
      "explanation": "Hydrogen has atomic number 1. Its most common isotope has no neutrons."
    },
    {
      "answer": "HELIUM",
      "display": "Helium",
      "level": 1,
      "clue": "Balloon-filling noble gas, symbol He",
      "explanation": "Helium has atomic number 2. Its name comes from the Greek word for the Sun."
    },
    {
      "answer": "LITHIUM",
      "display": "Lithium",
      "level": 1,
      "clue": "Lightest metal, symbol Li",
      "explanation": "Lithium has atomic number 3. It belongs to the alkali-metal family."
    },
    {
      "answer": "BERYLLIUM",
      "display": "Beryllium",
      "level": 1,
      "clue": "Metal in the mineral beryl, symbol Be",
      "explanation": "Beryllium has atomic number 4. Emerald and aquamarine are varieties of beryl."
    },
    {
      "answer": "BORON",
      "display": "Boron",
      "level": 1,
      "clue": "Element in borax, symbol B",
      "explanation": "Boron has atomic number 5. It is a metalloid, between metals and nonmetals."
    },
    {
      "answer": "CARBON",
      "display": "Carbon",
      "level": 1,
      "clue": "Element of diamond and graphite, symbol C",
      "explanation": "Carbon has atomic number 6. Its atoms form the backbone of organic molecules."
    },
    {
      "answer": "NITROGEN",
      "display": "Nitrogen",
      "level": 1,
      "clue": "Gas making up most of the air, symbol N",
      "explanation": "Nitrogen has atomic number 7. Its liquid form is used for very cold storage."
    },
    {
      "answer": "OXYGEN",
      "display": "Oxygen",
      "level": 1,
      "clue": "Gas needed for ordinary combustion, symbol O",
      "explanation": "Oxygen has atomic number 8. Ozone is a form whose molecules have three atoms."
    },
    {
      "answer": "FLUORINE",
      "display": "Fluorine",
      "level": 1,
      "clue": "Most electronegative element, symbol F",
      "explanation": "Fluorine has atomic number 9. Fluoride compounds are used in many toothpastes."
    },
    {
      "answer": "NEON",
      "display": "Neon",
      "level": 1,
      "clue": "Noble gas giving a red-orange glow, symbol Ne",
      "explanation": "Neon has atomic number 10. It belongs to group 18 of the periodic table."
    },
    {
      "answer": "SODIUM",
      "display": "Sodium",
      "level": 1,
      "clue": "Alkali metal whose chloride is table salt",
      "explanation": "Sodium has atomic number 11. Its symbol Na comes from the name natrium."
    },
    {
      "answer": "MAGNESIUM",
      "display": "Magnesium",
      "level": 1,
      "clue": "Metal that burns with a bright white light, Mg",
      "explanation": "Magnesium has atomic number 12. It is the central metal atom in chlorophyll."
    },
    {
      "answer": "ALUMINIUM",
      "display": "Aluminium",
      "level": 1,
      "clue": "Light metal used in kitchen foil, symbol Al",
      "explanation": "Aluminium has atomic number 13. Aluminum is a common alternative spelling."
    },
    {
      "answer": "SILICON",
      "display": "Silicon",
      "level": 1,
      "clue": "Semiconductor element, symbol Si",
      "explanation": "Silicon has atomic number 14. Its dioxide is a major ingredient of ordinary glass."
    },
    {
      "answer": "PHOSPHORUS",
      "display": "Phosphorus",
      "level": 1,
      "clue": "Element with white and red allotropes, symbol P",
      "explanation": "Phosphorus has atomic number 15. Phosphate groups are part of DNA and ATP."
    },
    {
      "answer": "SULFUR",
      "display": "Sulfur",
      "level": 1,
      "clue": "Yellow nonmetal, symbol S",
      "explanation": "Sulfur has atomic number 16. It was once commonly called brimstone."
    },
    {
      "answer": "CHLORINE",
      "display": "Chlorine",
      "level": 1,
      "clue": "Greenish-yellow halogen gas, symbol Cl",
      "explanation": "Chlorine has atomic number 17. Its chloride ion is part of table salt."
    },
    {
      "answer": "ARGON",
      "display": "Argon",
      "level": 1,
      "clue": "Noble gas used to shield welds, symbol Ar",
      "explanation": "Argon has atomic number 18. Its name comes from a Greek word meaning inactive."
    },
    {
      "answer": "POTASSIUM",
      "display": "Potassium",
      "level": 1,
      "clue": "Alkali metal with symbol K",
      "explanation": "Potassium has atomic number 19. Its symbol comes from the name kalium."
    },
    {
      "answer": "CALCIUM",
      "display": "Calcium",
      "level": 1,
      "clue": "Metal found in limestone compounds, symbol Ca",
      "explanation": "Calcium has atomic number 20. Its ions are important in muscle contraction."
    },
    {
      "answer": "SCANDIUM",
      "display": "Scandium",
      "level": 1,
      "clue": "Element named for Scandinavia, symbol Sc",
      "explanation": "Scandium has atomic number 21. It has atomic number 21."
    },
    {
      "answer": "TITANIUM",
      "display": "Titanium",
      "level": 1,
      "clue": "Strong, light metal named for the Titans, Ti",
      "explanation": "Titanium has atomic number 22. Its dioxide is widely used as a white pigment."
    },
    {
      "answer": "VANADIUM",
      "display": "Vanadium",
      "level": 1,
      "clue": "Metal named after the goddess Vanadis, V",
      "explanation": "Vanadium has atomic number 23. Small amounts can strengthen steel alloys."
    },
    {
      "answer": "CHROMIUM",
      "display": "Chromium",
      "level": 1,
      "clue": "Metal used in shiny protective plating, Cr",
      "explanation": "Chromium has atomic number 24. Its name comes from the Greek word for color."
    },
    {
      "answer": "MANGANESE",
      "display": "Manganese",
      "level": 1,
      "clue": "Metal with atomic number 25 and symbol Mn",
      "explanation": "Manganese has atomic number 25. It is widely used in steelmaking."
    },
    {
      "answer": "IRON",
      "display": "Iron",
      "level": 1,
      "clue": "Main metal in ordinary steel, symbol Fe",
      "explanation": "Iron has atomic number 26. Its symbol comes from the Latin name ferrum."
    },
    {
      "answer": "COBALT",
      "display": "Cobalt",
      "level": 1,
      "clue": "Metal whose compounds color glass blue, Co",
      "explanation": "Cobalt has atomic number 27. It is the central metal atom in vitamin B12."
    },
    {
      "answer": "NICKEL",
      "display": "Nickel",
      "level": 1,
      "clue": "Metal used in many rechargeable batteries, Ni",
      "explanation": "Nickel has atomic number 28. It is also an ingredient of many stainless steels."
    },
    {
      "answer": "COPPER",
      "display": "Copper",
      "level": 1,
      "clue": "Reddish metal widely used for wiring, Cu",
      "explanation": "Copper has atomic number 29. Its symbol comes from the Latin name cuprum."
    },
    {
      "answer": "ZINC",
      "display": "Zinc",
      "level": 1,
      "clue": "Metal used to galvanize steel, symbol Zn",
      "explanation": "Zinc has atomic number 30. Brass is an alloy of this metal and copper."
    },
    {
      "answer": "GALLIUM",
      "display": "Gallium",
      "level": 2,
      "clue": "Metal that can melt in a warm hand, Ga",
      "explanation": "Gallium has atomic number 31. Its arsenide is used in semiconductor devices."
    },
    {
      "answer": "GERMANIUM",
      "display": "Germanium",
      "level": 2,
      "clue": "Semiconductor named for Germany, symbol Ge",
      "explanation": "Germanium has atomic number 32. It has atomic number 32."
    },
    {
      "answer": "ARSENIC",
      "display": "Arsenic",
      "level": 2,
      "clue": "Metalloid with symbol As and atomic number 33",
      "explanation": "Arsenic has atomic number 33. Some of its compounds are highly toxic."
    },
    {
      "answer": "SELENIUM",
      "display": "Selenium",
      "level": 2,
      "clue": "Element named for the Moon, symbol Se",
      "explanation": "Selenium has atomic number 34. It is an essential trace nutrient in small amounts."
    },
    {
      "answer": "BROMINE",
      "display": "Bromine",
      "level": 2,
      "clue": "Halogen that is liquid at room temperature, Br",
      "explanation": "Bromine has atomic number 35. Its name comes from a Greek word for stench."
    },
    {
      "answer": "KRYPTON",
      "display": "Krypton",
      "level": 2,
      "clue": "Noble gas with atomic number 36, symbol Kr",
      "explanation": "Krypton has atomic number 36. Its name comes from a Greek word meaning hidden."
    },
    {
      "answer": "RUBIDIUM",
      "display": "Rubidium",
      "level": 2,
      "clue": "Alkali metal named for red spectral lines, Rb",
      "explanation": "Rubidium has atomic number 37. It lies between potassium and caesium in group 1."
    },
    {
      "answer": "STRONTIUM",
      "display": "Strontium",
      "level": 2,
      "clue": "Metal whose salts give red fireworks, Sr",
      "explanation": "Strontium has atomic number 38. It is named after Strontian in Scotland."
    },
    {
      "answer": "YTTRIUM",
      "display": "Yttrium",
      "level": 2,
      "clue": "Element with symbol Y and atomic number 39",
      "explanation": "Yttrium has atomic number 39. Its name comes from Ytterby, a village in Sweden."
    },
    {
      "answer": "ZIRCONIUM",
      "display": "Zirconium",
      "level": 2,
      "clue": "Metal used in nuclear fuel cladding, Zr",
      "explanation": "Zirconium has atomic number 40. Its name comes from the mineral zircon."
    },
    {
      "answer": "NIOBIUM",
      "display": "Niobium",
      "level": 2,
      "clue": "Metal named after the mythical Niobe, Nb",
      "explanation": "Niobium has atomic number 41. It has atomic number 41."
    },
    {
      "answer": "MOLYBDENUM",
      "display": "Molybdenum",
      "level": 2,
      "clue": "Metal with symbol Mo and atomic number 42",
      "explanation": "Molybdenum has atomic number 42. It is used in alloys that withstand high temperatures."
    },
    {
      "answer": "TECHNETIUM",
      "display": "Technetium",
      "level": 2,
      "clue": "Element 43, first produced artificially",
      "explanation": "Technetium has atomic number 43. All of its isotopes are radioactive."
    },
    {
      "answer": "RUTHENIUM",
      "display": "Ruthenium",
      "level": 2,
      "clue": "Metal named after Ruthenia, symbol Ru",
      "explanation": "Ruthenium has atomic number 44. It belongs to the platinum group of metals."
    },
    {
      "answer": "RHODIUM",
      "display": "Rhodium",
      "level": 2,
      "clue": "Metal named for rose-colored salts, Rh",
      "explanation": "Rhodium has atomic number 45. It is used in vehicle catalytic converters."
    },
    {
      "answer": "PALLADIUM",
      "display": "Palladium",
      "level": 2,
      "clue": "Metal named after the asteroid Pallas, Pd",
      "explanation": "Palladium has atomic number 46. It belongs to the platinum group of metals."
    },
    {
      "answer": "SILVER",
      "display": "Silver",
      "level": 1,
      "clue": "Precious metal with symbol Ag",
      "explanation": "Silver has atomic number 47. Its symbol comes from the Latin name argentum."
    },
    {
      "answer": "CADMIUM",
      "display": "Cadmium",
      "level": 2,
      "clue": "Metal with symbol Cd and atomic number 48",
      "explanation": "Cadmium has atomic number 48. It has been used in rechargeable batteries."
    },
    {
      "answer": "INDIUM",
      "display": "Indium",
      "level": 2,
      "clue": "Metal named for an indigo spectral line, In",
      "explanation": "Indium has atomic number 49. Its tin oxide is used in transparent conductive coatings."
    },
    {
      "answer": "TIN",
      "display": "Tin",
      "level": 1,
      "clue": "Metal alloyed with copper to make bronze, Sn",
      "explanation": "Tin has atomic number 50. Its symbol comes from the Latin name stannum."
    },
    {
      "answer": "ANTIMONY",
      "display": "Antimony",
      "level": 2,
      "clue": "Metalloid with symbol Sb",
      "explanation": "Antimony has atomic number 51. Its symbol comes from the Latin name stibium."
    },
    {
      "answer": "TELLURIUM",
      "display": "Tellurium",
      "level": 2,
      "clue": "Element named for the Earth, symbol Te",
      "explanation": "Tellurium has atomic number 52. It is a metalloid with atomic number 52."
    },
    {
      "answer": "IODINE",
      "display": "Iodine",
      "level": 1,
      "clue": "Halogen whose vapor is violet, symbol I",
      "explanation": "Iodine has atomic number 53. The thyroid uses it to make hormones."
    },
    {
      "answer": "XENON",
      "display": "Xenon",
      "level": 2,
      "clue": "Noble gas used in some bright lamps, Xe",
      "explanation": "Xenon has atomic number 54. Its name comes from a Greek word meaning stranger."
    },
    {
      "answer": "CAESIUM",
      "display": "Caesium",
      "level": 2,
      "clue": "Alkali metal used in atomic clocks, Cs",
      "explanation": "Caesium has atomic number 55. Cesium is a common alternative spelling."
    },
    {
      "answer": "BARIUM",
      "display": "Barium",
      "level": 2,
      "clue": "Metal whose sulfate is used in X-ray imaging, Ba",
      "explanation": "Barium has atomic number 56. Its compounds can give green colors to fireworks."
    },
    {
      "answer": "LANTHANUM",
      "display": "Lanthanum",
      "level": 2,
      "clue": "Element with atomic number 57, symbol La",
      "explanation": "Lanthanum has atomic number 57. Its name comes from a Greek word meaning to lie hidden."
    },
    {
      "answer": "CERIUM",
      "display": "Cerium",
      "level": 2,
      "clue": "Element named after the asteroid Ceres, Ce",
      "explanation": "Cerium has atomic number 58. Its oxide is used to polish glass."
    },
    {
      "answer": "PRASEODYMIUM",
      "display": "Praseodymium",
      "level": 2,
      "clue": "Element named for a green twin, symbol Pr",
      "explanation": "Praseodymium has atomic number 59. It belongs to the lanthanoid series."
    },
    {
      "answer": "NEODYMIUM",
      "display": "Neodymium",
      "level": 2,
      "clue": "Metal used in strong permanent magnets, Nd",
      "explanation": "Neodymium has atomic number 60. Its name comes from Greek words meaning new twin."
    },
    {
      "answer": "PROMETHIUM",
      "display": "Promethium",
      "level": 2,
      "clue": "Element named after Prometheus, symbol Pm",
      "explanation": "Promethium has atomic number 61. All of its isotopes are radioactive."
    },
    {
      "answer": "SAMARIUM",
      "display": "Samarium",
      "level": 2,
      "clue": "Element named through the mineral samarskite",
      "explanation": "Samarium has atomic number 62. It is used in certain permanent-magnet alloys."
    },
    {
      "answer": "EUROPIUM",
      "display": "Europium",
      "level": 2,
      "clue": "Element named for Europe, symbol Eu",
      "explanation": "Europium has atomic number 63. Its compounds are used in red phosphors."
    },
    {
      "answer": "GADOLINIUM",
      "display": "Gadolinium",
      "level": 2,
      "clue": "Element named after Johan Gadolin, Gd",
      "explanation": "Gadolinium has atomic number 64. Some of its compounds are used in MRI contrast agents."
    },
    {
      "answer": "TERBIUM",
      "display": "Terbium",
      "level": 2,
      "clue": "Element with symbol Tb and atomic number 65",
      "explanation": "Terbium has atomic number 65. Its name comes from Ytterby in Sweden."
    },
    {
      "answer": "DYSPROSIUM",
      "display": "Dysprosium",
      "level": 2,
      "clue": "Element named for being hard to obtain, Dy",
      "explanation": "Dysprosium has atomic number 66. It is used in some high-performance magnets."
    },
    {
      "answer": "HOLMIUM",
      "display": "Holmium",
      "level": 2,
      "clue": "Element named for Stockholm, symbol Ho",
      "explanation": "Holmium has atomic number 67. It belongs to the lanthanoid series."
    },
    {
      "answer": "ERBIUM",
      "display": "Erbium",
      "level": 2,
      "clue": "Element with symbol Er and atomic number 68",
      "explanation": "Erbium has atomic number 68. Its name comes from Ytterby in Sweden."
    },
    {
      "answer": "THULIUM",
      "display": "Thulium",
      "level": 2,
      "clue": "Element named after the northern land Thule",
      "explanation": "Thulium has atomic number 69. It belongs to the lanthanoid series."
    },
    {
      "answer": "YTTERBIUM",
      "display": "Ytterbium",
      "level": 2,
      "clue": "Element with symbol Yb and atomic number 70",
      "explanation": "Ytterbium has atomic number 70. Its name comes from Ytterby in Sweden."
    },
    {
      "answer": "LUTETIUM",
      "display": "Lutetium",
      "level": 2,
      "clue": "Element named after Lutetia, symbol Lu",
      "explanation": "Lutetium has atomic number 71. Lutetia was the Latin name for Paris."
    },
    {
      "answer": "HAFNIUM",
      "display": "Hafnium",
      "level": 2,
      "clue": "Element named after Hafnia, symbol Hf",
      "explanation": "Hafnium has atomic number 72. Hafnia is the Latin name for Copenhagen."
    },
    {
      "answer": "TANTALUM",
      "display": "Tantalum",
      "level": 2,
      "clue": "Metal named after the mythical Tantalus, Ta",
      "explanation": "Tantalum has atomic number 73. Its oxide is used in capacitors."
    },
    {
      "answer": "TUNGSTEN",
      "display": "Tungsten",
      "level": 2,
      "clue": "High-melting metal used in lamp filaments, W",
      "explanation": "Tungsten has atomic number 74. Its symbol comes from the alternative name wolfram."
    },
    {
      "answer": "RHENIUM",
      "display": "Rhenium",
      "level": 2,
      "clue": "Metal named after the Rhine, symbol Re",
      "explanation": "Rhenium has atomic number 75. It is used in some high-temperature superalloys."
    },
    {
      "answer": "OSMIUM",
      "display": "Osmium",
      "level": 2,
      "clue": "Dense platinum-group metal, symbol Os",
      "explanation": "Osmium has atomic number 76. Its name comes from a Greek word for smell."
    },
    {
      "answer": "IRIDIUM",
      "display": "Iridium",
      "level": 2,
      "clue": "Metal named after the rainbow goddess Iris",
      "explanation": "Iridium has atomic number 77. It belongs to the platinum group of metals."
    },
    {
      "answer": "PLATINUM",
      "display": "Platinum",
      "level": 1,
      "clue": "Precious metal with symbol Pt",
      "explanation": "Platinum has atomic number 78. It is used in catalysts and jewelry."
    },
    {
      "answer": "GOLD",
      "display": "Gold",
      "level": 1,
      "clue": "Yellow precious metal with symbol Au",
      "explanation": "Gold has atomic number 79. Its symbol comes from the Latin name aurum."
    },
    {
      "answer": "MERCURY",
      "display": "Mercury",
      "level": 1,
      "clue": "Metal that is liquid at room temperature, Hg",
      "explanation": "Mercury has atomic number 80. Its symbol comes from hydrargyrum, meaning liquid silver."
    },
    {
      "answer": "THALLIUM",
      "display": "Thallium",
      "level": 2,
      "clue": "Metal named for a green spectral line, Tl",
      "explanation": "Thallium has atomic number 81. Its name comes from a Greek word for a green shoot."
    },
    {
      "answer": "LEAD",
      "display": "Lead",
      "level": 1,
      "clue": "Heavy metal with symbol Pb",
      "explanation": "Lead has atomic number 82. Its symbol comes from the Latin name plumbum."
    },
    {
      "answer": "BISMUTH",
      "display": "Bismuth",
      "level": 2,
      "clue": "Metal with symbol Bi and atomic number 83",
      "explanation": "Bismuth has atomic number 83. It is used in some low-melting alloys."
    },
    {
      "answer": "POLONIUM",
      "display": "Polonium",
      "level": 3,
      "clue": "Element named after Poland, symbol Po",
      "explanation": "Polonium has atomic number 84. All of its isotopes are radioactive."
    },
    {
      "answer": "ASTATINE",
      "display": "Astatine",
      "level": 3,
      "clue": "Radioactive halogen with symbol At",
      "explanation": "Astatine has atomic number 85. Its name comes from a Greek word meaning unstable."
    },
    {
      "answer": "RADON",
      "display": "Radon",
      "level": 3,
      "clue": "Radioactive noble gas with symbol Rn",
      "explanation": "Radon has atomic number 86. It can accumulate indoors after forming in rocks and soil."
    },
    {
      "answer": "FRANCIUM",
      "display": "Francium",
      "level": 3,
      "clue": "Alkali metal named after France, symbol Fr",
      "explanation": "Francium has atomic number 87. All of its isotopes are radioactive."
    },
    {
      "answer": "RADIUM",
      "display": "Radium",
      "level": 3,
      "clue": "Radioactive metal with symbol Ra",
      "explanation": "Radium has atomic number 88. It belongs to the alkaline-earth-metal family."
    },
    {
      "answer": "ACTINIUM",
      "display": "Actinium",
      "level": 3,
      "clue": "Element with atomic number 89, symbol Ac",
      "explanation": "Actinium has atomic number 89. Its name comes from a Greek word for ray."
    },
    {
      "answer": "THORIUM",
      "display": "Thorium",
      "level": 3,
      "clue": "Element named after the god Thor, symbol Th",
      "explanation": "Thorium has atomic number 90. It is a radioactive metal with atomic number 90."
    },
    {
      "answer": "PROTACTINIUM",
      "display": "Protactinium",
      "level": 3,
      "clue": "Radioactive element 91, symbol Pa",
      "explanation": "Protactinium has atomic number 91. Its name refers to its relationship with actinium."
    },
    {
      "answer": "URANIUM",
      "display": "Uranium",
      "level": 1,
      "clue": "Element named after the planet Uranus, U",
      "explanation": "Uranium has atomic number 92. Its isotopes include U-235 and U-238."
    },
    {
      "answer": "NEPTUNIUM",
      "display": "Neptunium",
      "level": 3,
      "clue": "Element named after the planet Neptune, Np",
      "explanation": "Neptunium has atomic number 93. It has atomic number 93, just after uranium."
    },
    {
      "answer": "PLUTONIUM",
      "display": "Plutonium",
      "level": 3,
      "clue": "Element named after Pluto, symbol Pu",
      "explanation": "Plutonium has atomic number 94. It has atomic number 94, just after neptunium."
    },
    {
      "answer": "AMERICIUM",
      "display": "Americium",
      "level": 3,
      "clue": "Element named after the Americas, symbol Am",
      "explanation": "Americium has atomic number 95. Its isotope Am-241 is used in some smoke detectors."
    },
    {
      "answer": "CURIUM",
      "display": "Curium",
      "level": 3,
      "clue": "Element named after Marie and Pierre Curie",
      "explanation": "Curium has atomic number 96. It is a radioactive actinoid with atomic number 96."
    },
    {
      "answer": "BERKELIUM",
      "display": "Berkelium",
      "level": 3,
      "clue": "Element named after Berkeley, symbol Bk",
      "explanation": "Berkelium has atomic number 97. It has atomic number 97."
    },
    {
      "answer": "CALIFORNIUM",
      "display": "Californium",
      "level": 3,
      "clue": "Element named after California, symbol Cf",
      "explanation": "Californium has atomic number 98. Its isotope Cf-252 can serve as a neutron source."
    },
    {
      "answer": "EINSTEINIUM",
      "display": "Einsteinium",
      "level": 3,
      "clue": "Element named after Albert Einstein, Es",
      "explanation": "Einsteinium has atomic number 99. It has atomic number 99."
    },
    {
      "answer": "FERMIUM",
      "display": "Fermium",
      "level": 3,
      "clue": "Element named after Enrico Fermi, symbol Fm",
      "explanation": "Fermium has atomic number 100. It has atomic number 100."
    },
    {
      "answer": "MENDELEVIUM",
      "display": "Mendelevium",
      "level": 3,
      "clue": "Element named after Dmitri Mendeleev, Md",
      "explanation": "Mendelevium has atomic number 101. It has atomic number 101."
    },
    {
      "answer": "NOBELIUM",
      "display": "Nobelium",
      "level": 3,
      "clue": "Element named after Alfred Nobel, symbol No",
      "explanation": "Nobelium has atomic number 102. It has atomic number 102."
    },
    {
      "answer": "LAWRENCIUM",
      "display": "Lawrencium",
      "level": 3,
      "clue": "Element named after Ernest Lawrence, Lr",
      "explanation": "Lawrencium has atomic number 103. It has atomic number 103."
    },
    {
      "answer": "RUTHERFORDIUM",
      "display": "Rutherfordium",
      "level": 3,
      "clue": "Element named after Ernest Rutherford, Rf",
      "explanation": "Rutherfordium has atomic number 104. It has atomic number 104."
    },
    {
      "answer": "DUBNIUM",
      "display": "Dubnium",
      "level": 3,
      "clue": "Element named after Dubna, symbol Db",
      "explanation": "Dubnium has atomic number 105. It has atomic number 105."
    },
    {
      "answer": "SEABORGIUM",
      "display": "Seaborgium",
      "level": 3,
      "clue": "Element named after Glenn Seaborg, Sg",
      "explanation": "Seaborgium has atomic number 106. It has atomic number 106."
    },
    {
      "answer": "BOHRIUM",
      "display": "Bohrium",
      "level": 3,
      "clue": "Element named after Niels Bohr, symbol Bh",
      "explanation": "Bohrium has atomic number 107. It has atomic number 107."
    },
    {
      "answer": "HASSIUM",
      "display": "Hassium",
      "level": 3,
      "clue": "Element named after Hesse, symbol Hs",
      "explanation": "Hassium has atomic number 108. It has atomic number 108."
    },
    {
      "answer": "MEITNERIUM",
      "display": "Meitnerium",
      "level": 3,
      "clue": "Element named after Lise Meitner, Mt",
      "explanation": "Meitnerium has atomic number 109. It has atomic number 109."
    },
    {
      "answer": "DARMSTADTIUM",
      "display": "Darmstadtium",
      "level": 3,
      "clue": "Element named after Darmstadt, symbol Ds",
      "explanation": "Darmstadtium has atomic number 110. It has atomic number 110."
    },
    {
      "answer": "ROENTGENIUM",
      "display": "Roentgenium",
      "level": 3,
      "clue": "Element named after Wilhelm Röntgen, Rg",
      "explanation": "Roentgenium has atomic number 111. It has atomic number 111."
    },
    {
      "answer": "COPERNICIUM",
      "display": "Copernicium",
      "level": 3,
      "clue": "Element named after Nicolaus Copernicus, Cn",
      "explanation": "Copernicium has atomic number 112. It has atomic number 112."
    },
    {
      "answer": "NIHONIUM",
      "display": "Nihonium",
      "level": 3,
      "clue": "Element named after Japan, symbol Nh",
      "explanation": "Nihonium has atomic number 113. Its name uses Nihon, a Japanese name for Japan."
    },
    {
      "answer": "FLEROVIUM",
      "display": "Flerovium",
      "level": 3,
      "clue": "Element named for the Flerov Laboratory, Fl",
      "explanation": "Flerovium has atomic number 114. It has atomic number 114."
    },
    {
      "answer": "MOSCOVIUM",
      "display": "Moscovium",
      "level": 3,
      "clue": "Element named after the Moscow region, Mc",
      "explanation": "Moscovium has atomic number 115. It has atomic number 115."
    },
    {
      "answer": "LIVERMORIUM",
      "display": "Livermorium",
      "level": 3,
      "clue": "Element named for Livermore's laboratory, Lv",
      "explanation": "Livermorium has atomic number 116. It has atomic number 116."
    },
    {
      "answer": "TENNESSINE",
      "display": "Tennessine",
      "level": 3,
      "clue": "Element named after Tennessee, symbol Ts",
      "explanation": "Tennessine has atomic number 117. It is placed in group 17 of the periodic table."
    },
    {
      "answer": "OGANESSON",
      "display": "Oganesson",
      "level": 3,
      "clue": "Element named after Yuri Oganessian, Og",
      "explanation": "Oganesson has atomic number 118. It is placed in group 18 of the periodic table."
    }
  ]
}