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cheatsheet do
title 'Chemical Elements'
docset_file_name 'Chemical_Elements'
keyword 'elements'
source_url 'http://cheat.kapeli.com'
style '
td.td_notes {
text-align: center;
}
th {
text-align: center;
}
'
category do
id 'Chemical Elements'
header 'Atomic<br>number'
header 'Symbol'
header 'Name'
header 'Atomic<br>mass'
header 'State<br>at <a href="https://en.wikipedia.org/wiki/Standard_conditions_for_temperature_and_pressure">STP</a>'
header 'Density<br>at <a href="https://en.wikipedia.org/wiki/Standard_conditions_for_temperature_and_pressure">STP</a>'
header 'Discovered'
entry do
td_notes '1'
td_notes 'H'
td_notes '[hydrogen](https://en.wikipedia.org/wiki/Hydrogen)'
td_notes '1.00794(4)'
td_notes 'gas'
td_notes '0.0000899'
td_notes '1766'
index_name 'hydrogen'
extra_index_name '1'
end
entry do
td_notes '2'
td_notes 'He'
td_notes '[helium](https://en.wikipedia.org/wiki/Helium)'
td_notes '4.002602(2)'
td_notes 'gas'
td_notes '0.0001785'
td_notes '1868'
index_name 'helium'
extra_index_name '2'
end
entry do
td_notes '3'
td_notes 'Li'
td_notes '[lithium](https://en.wikipedia.org/wiki/Lithium)'
td_notes '6.941(2)'
td_notes 'solid'
td_notes '0.535'
td_notes '1817'
index_name 'lithium'
extra_index_name '3'
end
entry do
td_notes '4'
td_notes 'Be'
td_notes '[beryllium](https://en.wikipedia.org/wiki/Beryllium)'
td_notes '9.012182(3)'
td_notes 'solid'
td_notes '1.848'
td_notes '1798'
index_name 'beryllium'
extra_index_name '4'
end
entry do
td_notes '5'
td_notes 'B'
td_notes '[boron](https://en.wikipedia.org/wiki/Boron)'
td_notes '10.811(7)'
td_notes 'solid'
td_notes '2.46'
td_notes '1807'
index_name 'boron'
extra_index_name '5'
end
entry do
td_notes '6'
td_notes 'C'
td_notes '[carbon](https://en.wikipedia.org/wiki/Carbon)'
td_notes '12.0107(8)'
td_notes 'solid'
td_notes '2.26'
td_notes 'Ancient'
index_name 'carbon'
extra_index_name '6'
end
entry do
td_notes '7'
td_notes 'N'
td_notes '[nitrogen](https://en.wikipedia.org/wiki/Nitrogen)'
td_notes '14.0067(2)'
td_notes 'gas'
td_notes '0.001251'
td_notes '1772'
index_name 'nitrogen'
extra_index_name '7'
end
entry do
td_notes '8'
td_notes 'O'
td_notes '[oxygen](https://en.wikipedia.org/wiki/Oxygen)'
td_notes '15.9994(3)'
td_notes 'gas'
td_notes '0.001429'
td_notes '1774'
index_name 'oxygen'
extra_index_name '8'
end
entry do
td_notes '9'
td_notes 'F'
td_notes '[fluorine](https://en.wikipedia.org/wiki/Fluorine)'
td_notes '18.9984032(5)'
td_notes 'gas'
td_notes '0.001696'
td_notes '1670'
index_name 'fluorine'
extra_index_name '9'
end
entry do
td_notes '10'
td_notes 'Ne'
td_notes '[neon](https://en.wikipedia.org/wiki/Neon)'
td_notes '20.1797(6)'
td_notes 'gas'
td_notes '0.0009'
td_notes '1898'
index_name 'neon'
extra_index_name '10'
end
entry do
td_notes '11'
td_notes 'Na'
td_notes '[sodium](https://en.wikipedia.org/wiki/Sodium)'
td_notes '22.98976928(2)'
td_notes 'solid'
td_notes '0.968'
td_notes '1807'
index_name 'sodium'
extra_index_name '11'
end
entry do
td_notes '12'
td_notes 'Mg'
td_notes '[magnesium](https://en.wikipedia.org/wiki/Magnesium)'
td_notes '24.3050(6)'
td_notes 'solid'
td_notes '1.738'
td_notes '1808'
index_name 'magnesium'
extra_index_name '12'
end
entry do
td_notes '13'
td_notes 'Al'
td_notes '[aluminum](https://en.wikipedia.org/wiki/Aluminum)'
td_notes '26.9815386(8)'
td_notes 'solid'
td_notes '2.7'
td_notes 'Ancient'
index_name 'aluminum'
extra_index_name '13'
end
entry do
td_notes '14'
td_notes 'Si'
td_notes '[silicon](https://en.wikipedia.org/wiki/Silicon)'
td_notes '28.0855(3)'
td_notes 'solid'
td_notes '2.33'
td_notes '1854'
index_name 'silicon'
extra_index_name '14'
end
entry do
td_notes '15'
td_notes 'P'
td_notes '[phosphorus](https://en.wikipedia.org/wiki/Phosphorus)'
td_notes '30.973762(2)'
td_notes 'solid'
td_notes '1.823'
td_notes '1669'
index_name 'phosphorus'
extra_index_name '15'
end
entry do
td_notes '16'
td_notes 'S'
td_notes '[sulfur](https://en.wikipedia.org/wiki/Sulfur)'
td_notes '32.065(5)'
td_notes 'solid'
td_notes '1.96'
td_notes 'Ancient'
index_name 'sulfur'
extra_index_name '16'
end
entry do
td_notes '17'
td_notes 'Cl'
td_notes '[chlorine](https://en.wikipedia.org/wiki/Chlorine)'
td_notes '35.453(2)'
td_notes 'gas'
td_notes '0.003214'
td_notes '1774'
index_name 'chlorine'
extra_index_name '17'
end
entry do
td_notes '18'
td_notes 'Ar'
td_notes '[argon](https://en.wikipedia.org/wiki/Argon)'
td_notes '39.948(1)'
td_notes 'gas'
td_notes '0.001784'
td_notes '1894'
index_name 'argon'
extra_index_name '18'
end
entry do
td_notes '19'
td_notes 'K'
td_notes '[potassium](https://en.wikipedia.org/wiki/Potassium)'
td_notes '39.0983(1)'
td_notes 'solid'
td_notes '0.856'
td_notes '1807'
index_name 'potassium'
extra_index_name '19'
end
entry do
td_notes '20'
td_notes 'Ca'
td_notes '[calcium](https://en.wikipedia.org/wiki/Calcium)'
td_notes '40.078(4)'
td_notes 'solid'
td_notes '1.55'
td_notes 'Ancient'
index_name 'calcium'
extra_index_name '20'
end
entry do
td_notes '21'
td_notes 'Sc'
td_notes '[scandium](https://en.wikipedia.org/wiki/Scandium)'
td_notes '44.955912(6)'
td_notes 'solid'
td_notes '2.985'
td_notes '1876'
index_name 'scandium'
extra_index_name '21'
end
entry do
td_notes '22'
td_notes 'Ti'
td_notes '[titanium](https://en.wikipedia.org/wiki/Titanium)'
td_notes '47.867(1)'
td_notes 'solid'
td_notes '4.507'
td_notes '1791'
index_name 'titanium'
extra_index_name '22'
end
entry do
td_notes '23'
td_notes 'V'
td_notes '[vanadium](https://en.wikipedia.org/wiki/Vanadium)'
td_notes '50.9415(1)'
td_notes 'solid'
td_notes '6.11'
td_notes '1803'
index_name 'vanadium'
extra_index_name '23'
end
entry do
td_notes '24'
td_notes 'Cr'
td_notes '[chromium](https://en.wikipedia.org/wiki/Chromium)'
td_notes '51.9961(6)'
td_notes 'solid'
td_notes '7.14'
td_notes 'Ancient'
index_name 'chromium'
extra_index_name '24'
end
entry do
td_notes '25'
td_notes 'Mn'
td_notes '[manganese](https://en.wikipedia.org/wiki/Manganese)'
td_notes '54.938045(5)'
td_notes 'solid'
td_notes '7.47'
td_notes '1774'
index_name 'manganese'
extra_index_name '25'
end
entry do
td_notes '26'
td_notes 'Fe'
td_notes '[iron](https://en.wikipedia.org/wiki/Iron)'
td_notes '55.845(2)'
td_notes 'solid'
td_notes '7.874'
td_notes 'Ancient'
index_name 'iron'
extra_index_name '26'
end
entry do
td_notes '27'
td_notes 'Co'
td_notes '[cobalt](https://en.wikipedia.org/wiki/Cobalt)'
td_notes '58.933195(5)'
td_notes 'solid'
td_notes '8.9'
td_notes 'Ancient'
index_name 'cobalt'
extra_index_name '27'
end
entry do
td_notes '28'
td_notes 'Ni'
td_notes '[nickel](https://en.wikipedia.org/wiki/Nickel)'
td_notes '58.6934(4)'
td_notes 'solid'
td_notes '8.908'
td_notes '1751'
index_name 'nickel'
extra_index_name '28'
end
entry do
td_notes '29'
td_notes 'Cu'
td_notes '[copper](https://en.wikipedia.org/wiki/Copper)'
td_notes '63.546(3)'
td_notes 'solid'
td_notes '8.92'
td_notes 'Ancient'
index_name 'copper'
extra_index_name '29'
end
entry do
td_notes '30'
td_notes 'Zn'
td_notes '[zinc](https://en.wikipedia.org/wiki/Zinc)'
td_notes '65.38(2)'
td_notes 'solid'
td_notes '7.14'
td_notes '1746'
index_name 'zinc'
extra_index_name '30'
end
entry do
td_notes '31'
td_notes 'Ga'
td_notes '[gallium](https://en.wikipedia.org/wiki/Gallium)'
td_notes '69.723(1)'
td_notes 'solid'
td_notes '5.904'
td_notes '1875'
index_name 'gallium'
extra_index_name '31'
end
entry do
td_notes '32'
td_notes 'Ge'
td_notes '[germanium](https://en.wikipedia.org/wiki/Germanium)'
td_notes '72.64(1)'
td_notes 'solid'
td_notes '5.323'
td_notes '1886'
index_name 'germanium'
extra_index_name '32'
end
entry do
td_notes '33'
td_notes 'As'
td_notes '[arsenic](https://en.wikipedia.org/wiki/Arsenic)'
td_notes '74.92160(2)'
td_notes 'solid'
td_notes '5.727'
td_notes 'Ancient'
index_name 'arsenic'
extra_index_name '33'
end
entry do
td_notes '34'
td_notes 'Se'
td_notes '[selenium](https://en.wikipedia.org/wiki/Selenium)'
td_notes '78.96(3)'
td_notes 'solid'
td_notes '4.819'
td_notes '1817'
index_name 'selenium'
extra_index_name '34'
end
entry do
td_notes '35'
td_notes 'Br'
td_notes '[bromine](https://en.wikipedia.org/wiki/Bromine)'
td_notes '79.904(1)'
td_notes 'liquid'
td_notes '3.12'
td_notes '1826'
index_name 'bromine'
extra_index_name '35'
end
entry do
td_notes '36'
td_notes 'Kr'
td_notes '[krypton](https://en.wikipedia.org/wiki/Krypton)'
td_notes '83.798(2)'
td_notes 'gas'
td_notes '0.00375'
td_notes '1898'
index_name 'krypton'
extra_index_name '36'
end
entry do
td_notes '37'
td_notes 'Rb'
td_notes '[rubidium](https://en.wikipedia.org/wiki/Rubidium)'
td_notes '85.4678(3)'
td_notes 'solid'
td_notes '1.532'
td_notes '1861'
index_name 'rubidium'
extra_index_name '37'
end
entry do
td_notes '38'
td_notes 'Sr'
td_notes '[strontium](https://en.wikipedia.org/wiki/Strontium)'
td_notes '87.62(1)'
td_notes 'solid'
td_notes '2.63'
td_notes '1790'
index_name 'strontium'
extra_index_name '38'
end
entry do
td_notes '39'
td_notes 'Y'
td_notes '[yttrium](https://en.wikipedia.org/wiki/Yttrium)'
td_notes '88.90585(2)'
td_notes 'solid'
td_notes '4.472'
td_notes '1794'
index_name 'yttrium'
extra_index_name '39'
end
entry do
td_notes '40'
td_notes 'Zr'
td_notes '[zirconium](https://en.wikipedia.org/wiki/Zirconium)'
td_notes '91.224(2)'
td_notes 'solid'
td_notes '6.511'
td_notes '1789'
index_name 'zirconium'
extra_index_name '40'
end
entry do
td_notes '41'
td_notes 'Nb'
td_notes '[niobium](https://en.wikipedia.org/wiki/Niobium)'
td_notes '92.90638(2)'
td_notes 'solid'
td_notes '8.57'
td_notes '1801'
index_name 'niobium'
extra_index_name '41'
end
entry do
td_notes '42'
td_notes 'Mo'
td_notes '[molybdenum](https://en.wikipedia.org/wiki/Molybdenum)'
td_notes '95.96(2)'
td_notes 'solid'
td_notes '10.28'
td_notes '1778'
index_name 'molybdenum'
extra_index_name '42'
end
entry do
td_notes '43'
td_notes 'Tc'
td_notes '[technetium](https://en.wikipedia.org/wiki/Technetium)'
td_notes '[98]'
td_notes 'solid'
td_notes '11.5'
td_notes '1937'
index_name 'technetium'
extra_index_name '43'
end
entry do
td_notes '44'
td_notes 'Ru'
td_notes '[ruthenium](https://en.wikipedia.org/wiki/Ruthenium)'
td_notes '101.07(2)'
td_notes 'solid'
td_notes '12.37'
td_notes '1827'
index_name 'ruthenium'
extra_index_name '44'
end
entry do
td_notes '45'
td_notes 'Rh'
td_notes '[rhodium](https://en.wikipedia.org/wiki/Rhodium)'
td_notes '102.90550(2)'
td_notes 'solid'
td_notes '12.45'
td_notes '1803'
index_name 'rhodium'
extra_index_name '45'
end
entry do
td_notes '46'
td_notes 'Pd'
td_notes '[palladium](https://en.wikipedia.org/wiki/Palladium)'
td_notes '106.42(1)'
td_notes 'solid'
td_notes '12.023'
td_notes '1803'
index_name 'palladium'
extra_index_name '46'
end
entry do
td_notes '47'
td_notes 'Ag'
td_notes '[silver](https://en.wikipedia.org/wiki/Silver)'
td_notes '107.8682(2)'
td_notes 'solid'
td_notes '10.49'
td_notes 'Ancient'
index_name 'silver'
extra_index_name '47'
end
entry do
td_notes '48'
td_notes 'Cd'
td_notes '[cadmium](https://en.wikipedia.org/wiki/Cadmium)'
td_notes '112.411(8)'
td_notes 'solid'
td_notes '8.65'
td_notes '1817'
index_name 'cadmium'
extra_index_name '48'
end
entry do
td_notes '49'
td_notes 'In'
td_notes '[indium](https://en.wikipedia.org/wiki/Indium)'
td_notes '114.818(3)'
td_notes 'solid'
td_notes '7.31'
td_notes '1863'
index_name 'indium'
extra_index_name '49'
end
entry do
td_notes '50'
td_notes 'Sn'
td_notes '[tin](https://en.wikipedia.org/wiki/Tin)'
td_notes '118.710(7)'
td_notes 'solid'
td_notes '7.31'
td_notes 'Ancient'
index_name 'tin'
extra_index_name '50'
end
entry do
td_notes '51'
td_notes 'Sb'
td_notes '[antimony](https://en.wikipedia.org/wiki/Antimony)'
td_notes '121.760(1)'
td_notes 'solid'
td_notes '6.697'
td_notes 'Ancient'
index_name 'antimony'
extra_index_name '51'
end
entry do
td_notes '52'
td_notes 'Te'
td_notes '[tellurium](https://en.wikipedia.org/wiki/Tellurium)'
td_notes '127.60(3)'
td_notes 'solid'
td_notes '6.24'
td_notes '1782'
index_name 'tellurium'
extra_index_name '52'
end
entry do
td_notes '53'
td_notes 'I'
td_notes '[iodine](https://en.wikipedia.org/wiki/Iodine)'
td_notes '126.90447(3)'
td_notes 'solid'
td_notes '4.94'
td_notes '1811'
index_name 'iodine'
extra_index_name '53'
end
entry do
td_notes '54'
td_notes 'Xe'
td_notes '[xenon](https://en.wikipedia.org/wiki/Xenon)'
td_notes '131.293(6)'
td_notes 'gas'
td_notes '0.0059'
td_notes '1898'
index_name 'xenon'
extra_index_name '54'
end
entry do
td_notes '55'
td_notes 'Cs'
td_notes '[cesium](https://en.wikipedia.org/wiki/Cesium)'
td_notes '132.9054519(2)'
td_notes 'solid'
td_notes '1.879'
td_notes '1860'
index_name 'cesium'
extra_index_name '55'
end
entry do
td_notes '56'
td_notes 'Ba'
td_notes '[barium](https://en.wikipedia.org/wiki/Barium)'
td_notes '137.327(7)'
td_notes 'solid'
td_notes '3.51'
td_notes '1808'
index_name 'barium'
extra_index_name '56'
end
entry do
td_notes '57'
td_notes 'La'
td_notes '[lanthanum](https://en.wikipedia.org/wiki/Lanthanum)'
td_notes '138.90547(7)'
td_notes 'solid'
td_notes '6.146'
td_notes '1839'
index_name 'lanthanum'
extra_index_name '57'
end
entry do
td_notes '58'
td_notes 'Ce'
td_notes '[cerium](https://en.wikipedia.org/wiki/Cerium)'
td_notes '140.116(1)'
td_notes 'solid'
td_notes '6.689'
td_notes '1803'
index_name 'cerium'
extra_index_name '58'
end
entry do
td_notes '59'
td_notes 'Pr'
td_notes '[praseodymium](https://en.wikipedia.org/wiki/Praseodymium)'
td_notes '140.90765(2)'
td_notes 'solid'
td_notes '6.64'
td_notes '1885'
index_name 'praseodymium'
extra_index_name '59'
end
entry do
td_notes '60'
td_notes 'Nd'
td_notes '[neodymium](https://en.wikipedia.org/wiki/Neodymium)'
td_notes '144.242(3)'
td_notes 'solid'
td_notes '7.01'
td_notes '1885'
index_name 'neodymium'
extra_index_name '60'
end
entry do
td_notes '61'
td_notes 'Pm'
td_notes '[promethium](https://en.wikipedia.org/wiki/Promethium)'
td_notes '[145]'
td_notes 'solid'
td_notes '7.264'
td_notes '1947'
index_name 'promethium'
extra_index_name '61'
end
entry do
td_notes '62'
td_notes 'Sm'
td_notes '[samarium](https://en.wikipedia.org/wiki/Samarium)'
td_notes '150.36(2)'
td_notes 'solid'
td_notes '7.353'
td_notes '1853'
index_name 'samarium'
extra_index_name '62'
end
entry do
td_notes '63'
td_notes 'Eu'
td_notes '[europium](https://en.wikipedia.org/wiki/Europium)'
td_notes '151.964(1)'
td_notes 'solid'
td_notes '5.244'
td_notes '1901'
index_name 'europium'
extra_index_name '63'
end
entry do
td_notes '64'
td_notes 'Gd'
td_notes '[gadolinium](https://en.wikipedia.org/wiki/Gadolinium)'
td_notes '157.25(3)'
td_notes 'solid'
td_notes '7.901'
td_notes '1880'
index_name 'gadolinium'
extra_index_name '64'
end
entry do
td_notes '65'
td_notes 'Tb'
td_notes '[terbium](https://en.wikipedia.org/wiki/Terbium)'
td_notes '158.92535(2)'
td_notes 'solid'
td_notes '8.219'
td_notes '1843'
index_name 'terbium'
extra_index_name '65'
end
entry do
td_notes '66'
td_notes 'Dy'
td_notes '[dysprosium](https://en.wikipedia.org/wiki/Dysprosium)'
td_notes '162.500(1)'
td_notes 'solid'
td_notes '8.551'
td_notes '1886'
index_name 'dysprosium'
extra_index_name '66'
end
entry do
td_notes '67'
td_notes 'Ho'
td_notes '[holmium](https://en.wikipedia.org/wiki/Holmium)'
td_notes '164.93032(2)'
td_notes 'solid'
td_notes '8.795'
td_notes '1878'
index_name 'holmium'
extra_index_name '67'
end
entry do
td_notes '68'
td_notes 'Er'
td_notes '[erbium](https://en.wikipedia.org/wiki/Erbium)'
td_notes '167.259(3)'
td_notes 'solid'
td_notes '9.066'
td_notes '1842'
index_name 'erbium'
extra_index_name '68'
end
entry do
td_notes '69'
td_notes 'Tm'
td_notes '[thulium](https://en.wikipedia.org/wiki/Thulium)'
td_notes '168.93421(2)'
td_notes 'solid'
td_notes '9.321'
td_notes '1879'
index_name 'thulium'
extra_index_name '69'
end
entry do
td_notes '70'
td_notes 'Yb'
td_notes '[ytterbium](https://en.wikipedia.org/wiki/Ytterbium)'
td_notes '173.054(5)'
td_notes 'solid'
td_notes '6.57'
td_notes '1878'
index_name 'ytterbium'
extra_index_name '70'
end
entry do
td_notes '71'
td_notes 'Lu'
td_notes '[lutetium](https://en.wikipedia.org/wiki/Lutetium)'
td_notes '174.9668(1)'
td_notes 'solid'
td_notes '9.841'
td_notes '1907'
index_name 'lutetium'
extra_index_name '71'
end
entry do
td_notes '72'
td_notes 'Hf'
td_notes '[hafnium](https://en.wikipedia.org/wiki/Hafnium)'
td_notes '178.49(2)'
td_notes 'solid'
td_notes '13.31'
td_notes '1923'
index_name 'hafnium'
extra_index_name '72'
end
entry do
td_notes '73'
td_notes 'Ta'
td_notes '[tantalum](https://en.wikipedia.org/wiki/Tantalum)'
td_notes '180.94788(2)'
td_notes 'solid'
td_notes '16.65'
td_notes '1802'
index_name 'tantalum'
extra_index_name '73'
end
entry do
td_notes '74'
td_notes 'W'
td_notes '[tungsten](https://en.wikipedia.org/wiki/Tungsten)'
td_notes '183.84(1)'
td_notes 'solid'
td_notes '19.25'
td_notes '1783'
index_name 'tungsten'
extra_index_name '74'
end
entry do
td_notes '75'
td_notes 'Re'
td_notes '[rhenium](https://en.wikipedia.org/wiki/Rhenium)'
td_notes '186.207(1)'
td_notes 'solid'
td_notes '21.02'
td_notes '1925'
index_name 'rhenium'
extra_index_name '75'
end
entry do
td_notes '76'
td_notes 'Os'
td_notes '[osmium](https://en.wikipedia.org/wiki/Osmium)'
td_notes '190.23(3)'
td_notes 'solid'
td_notes '22.61'
td_notes '1803'
index_name 'osmium'
extra_index_name '76'
end
entry do
td_notes '77'
td_notes 'Ir'
td_notes '[iridium](https://en.wikipedia.org/wiki/Iridium)'
td_notes '192.217(3)'
td_notes 'solid'
td_notes '22.65'
td_notes '1803'
index_name 'iridium'
extra_index_name '77'
end
entry do
td_notes '78'
td_notes 'Pt'
td_notes '[platinum](https://en.wikipedia.org/wiki/Platinum)'
td_notes '195.084(9)'
td_notes 'solid'
td_notes '21.09'
td_notes 'Ancient'
index_name 'platinum'
extra_index_name '78'
end
entry do
td_notes '79'
td_notes 'Au'
td_notes '[gold](https://en.wikipedia.org/wiki/Gold)'
td_notes '196.966569(4)'
td_notes 'solid'
td_notes '19.3'
td_notes 'Ancient'
index_name 'gold'
extra_index_name '79'
end
entry do
td_notes '80'
td_notes 'Hg'
td_notes '[mercury](https://en.wikipedia.org/wiki/Mercury)'
td_notes '200.59(2)'
td_notes 'liquid'
td_notes '13.534'
td_notes 'Ancient'
index_name 'mercury'
extra_index_name '80'
end
entry do
td_notes '81'
td_notes 'Tl'
td_notes '[thallium](https://en.wikipedia.org/wiki/Thallium)'
td_notes '204.3833(2)'
td_notes 'solid'
td_notes '11.85'
td_notes '1861'
index_name 'thallium'
extra_index_name '81'
end
entry do
td_notes '82'
td_notes 'Pb'
td_notes '[lead](https://en.wikipedia.org/wiki/Lead)'
td_notes '207.2(1)'
td_notes 'solid'
td_notes '11.34'
td_notes 'Ancient'
index_name 'lead'
extra_index_name '82'
end
entry do
td_notes '83'
td_notes 'Bi'
td_notes '[bismuth](https://en.wikipedia.org/wiki/Bismuth)'
td_notes '208.98040(1)'
td_notes 'solid'
td_notes '9.78'
td_notes 'Ancient'
index_name 'bismuth'
extra_index_name '83'
end
entry do
td_notes '84'
td_notes 'Po'
td_notes '[polonium](https://en.wikipedia.org/wiki/Polonium)'
td_notes '[209]'
td_notes 'solid'
td_notes '9.196'
td_notes '1898'
index_name 'polonium'
extra_index_name '84'
end
entry do
td_notes '85'
td_notes 'At'
td_notes '[astatine](https://en.wikipedia.org/wiki/Astatine)'
td_notes '[210]'
td_notes 'solid'
td_notes '(unknown)'
td_notes '1940'
index_name 'astatine'
extra_index_name '85'
end
entry do
td_notes '86'
td_notes 'Rn'
td_notes '[radon](https://en.wikipedia.org/wiki/Radon)'
td_notes '[222]'
td_notes 'gas'
td_notes '0.00973'
td_notes '1900'
index_name 'radon'
extra_index_name '86'
end
entry do
td_notes '87'
td_notes 'Fr'
td_notes '[francium](https://en.wikipedia.org/wiki/Francium)'
td_notes '[223]'
td_notes 'solid'
td_notes '(unknown)'
td_notes '1939'
index_name 'francium'
extra_index_name '87'
end
entry do
td_notes '88'
td_notes 'Ra'
td_notes '[radium](https://en.wikipedia.org/wiki/Radium)'
td_notes '[226]'
td_notes 'solid'
td_notes '5'
td_notes '1898'
index_name 'radium'
extra_index_name '88'
end
entry do
td_notes '89'
td_notes 'Ac'
td_notes '[actinium](https://en.wikipedia.org/wiki/Actinium)'
td_notes '[227]'
td_notes 'solid'
td_notes '10.07'
td_notes '1899'
index_name 'actinium'
extra_index_name '89'
end
entry do
td_notes '90'
td_notes 'Th'
td_notes '[thorium](https://en.wikipedia.org/wiki/Thorium)'
td_notes '232.03806(2)'
td_notes 'solid'
td_notes '11.724'
td_notes '1828'
index_name 'thorium'
extra_index_name '90'
end
entry do
td_notes '91'
td_notes 'Pa'
td_notes '[protactinium](https://en.wikipedia.org/wiki/Protactinium)'
td_notes '231.03588(2)'
td_notes 'solid'
td_notes '15.37'
td_notes '1913'
index_name 'protactinium'
extra_index_name '91'
end
entry do
td_notes '92'
td_notes 'U'
td_notes '[uranium](https://en.wikipedia.org/wiki/Uranium)'
td_notes '238.02891(3)'
td_notes 'solid'
td_notes '19.05'
td_notes '1789'
index_name 'uranium'
extra_index_name '92'
end
entry do
td_notes '93'
td_notes 'Np'
td_notes '[neptunium](https://en.wikipedia.org/wiki/Neptunium)'
td_notes '[237]'
td_notes 'solid'
td_notes '20.45'
td_notes '1940'
index_name 'neptunium'
extra_index_name '93'
end
entry do
td_notes '94'
td_notes 'Pu'
td_notes '[plutonium](https://en.wikipedia.org/wiki/Plutonium)'
td_notes '[244]'
td_notes 'solid'
td_notes '19.816'
td_notes '1940'
index_name 'plutonium'
extra_index_name '94'
end
entry do
td_notes '95'
td_notes 'Am'
td_notes '[americium](https://en.wikipedia.org/wiki/Americium)'
td_notes '[243]'
td_notes 'solid'
td_notes '(unknown)'
td_notes '1944'
index_name 'americium'
extra_index_name '95'
end
entry do
td_notes '96'
td_notes 'Cm'
td_notes '[curium](https://en.wikipedia.org/wiki/Curium)'
td_notes '[247]'
td_notes 'solid'
td_notes '13.51'
td_notes '1944'
index_name 'curium'
extra_index_name '96'
end
entry do
td_notes '97'
td_notes 'Bk'
td_notes '[berkelium](https://en.wikipedia.org/wiki/Berkelium)'
td_notes '[247]'
td_notes 'solid'
td_notes '14.78'
td_notes '1949'
index_name 'berkelium'
extra_index_name '97'
end
entry do
td_notes '98'
td_notes 'Cf'
td_notes '[californium](https://en.wikipedia.org/wiki/Californium)'
td_notes '[251]'
td_notes 'solid'
td_notes '15.1'
td_notes '1950'
index_name 'californium'
extra_index_name '98'
end
entry do
td_notes '99'
td_notes 'Es'
td_notes '[einsteinium](https://en.wikipedia.org/wiki/Einsteinium)'
td_notes '[252]'
td_notes 'solid'
td_notes '(unknown)'
td_notes '1952'
index_name 'einsteinium'
extra_index_name '99'
end
entry do
td_notes '100'
td_notes 'Fm'
td_notes '[fermium](https://en.wikipedia.org/wiki/Fermium)'
td_notes '[257]'
td_notes '(unknown)'
td_notes '(unknown)'
td_notes '1952'
index_name 'fermium'
extra_index_name '100'
end
entry do
td_notes '101'
td_notes 'Md'
td_notes '[mendelevium](https://en.wikipedia.org/wiki/Mendelevium)'
td_notes '[258]'
td_notes '(unknown)'
td_notes '(unknown)'
td_notes '1955'
index_name 'mendelevium'
extra_index_name '101'
end
entry do
td_notes '102'
td_notes 'No'
td_notes '[nobelium](https://en.wikipedia.org/wiki/Nobelium)'
td_notes '[259]'
td_notes '(unknown)'
td_notes '(unknown)'
td_notes '1957'
index_name 'nobelium'
extra_index_name '102'
end
entry do
td_notes '103'
td_notes 'Lr'
td_notes '[lawrencium](https://en.wikipedia.org/wiki/Lawrencium)'
td_notes '[262]'
td_notes '(unknown)'
td_notes '(unknown)'
td_notes '1961'
index_name 'lawrencium'
extra_index_name '103'
end
entry do
td_notes '104'
td_notes 'Rf'
td_notes '[rutherfordium](https://en.wikipedia.org/wiki/Rutherfordium)'
td_notes '[267]'
td_notes '(unknown)'
td_notes '(unknown)'
td_notes '1969'
index_name 'rutherfordium'
extra_index_name '104'
end
entry do
td_notes '105'
td_notes 'Db'
td_notes '[dubnium](https://en.wikipedia.org/wiki/Dubnium)'
td_notes '[268]'
td_notes '(unknown)'
td_notes '(unknown)'
td_notes '1967'
index_name 'dubnium'
extra_index_name '105'
end
entry do
td_notes '106'
td_notes 'Sg'
td_notes '[seaborgium](https://en.wikipedia.org/wiki/Seaborgium)'
td_notes '[271]'
td_notes '(unknown)'
td_notes '(unknown)'
td_notes '1974'
index_name 'seaborgium'
extra_index_name '106'
end
entry do
td_notes '107'
td_notes 'Bh'
td_notes '[bohrium](https://en.wikipedia.org/wiki/Bohrium)'
td_notes '[272]'
td_notes '(unknown)'
td_notes '(unknown)'
td_notes '1976'
index_name 'bohrium'
extra_index_name '107'
end
entry do
td_notes '108'
td_notes 'Hs'
td_notes '[hassium](https://en.wikipedia.org/wiki/Hassium)'
td_notes '[270]'
td_notes '(unknown)'
td_notes '(unknown)'
td_notes '1984'
index_name 'hassium'
extra_index_name '108'
end
entry do
td_notes '109'
td_notes 'Mt'
td_notes '[meitnerium](https://en.wikipedia.org/wiki/Meitnerium)'
td_notes '[276]'
td_notes '(unknown)'
td_notes '(unknown)'
td_notes '1982'
index_name 'meitnerium'
extra_index_name '109'
end
entry do
td_notes '110'
td_notes 'Ds'
td_notes '[darmstadtium](https://en.wikipedia.org/wiki/Darmstadtium)'
td_notes '[281]'
td_notes '(unknown)'
td_notes '(unknown)'
td_notes '1994'
index_name 'darmstadtium'
extra_index_name '110'
end
entry do
td_notes '111'
td_notes 'Rg'
td_notes '[roentgenium](https://en.wikipedia.org/wiki/Roentgenium)'
td_notes '[280]'
td_notes '(unknown)'
td_notes '(unknown)'
td_notes '1994'
index_name 'roentgenium'
extra_index_name '111'
end
entry do
td_notes '112'
td_notes 'Cn'
td_notes '[copernicium](https://en.wikipedia.org/wiki/Copernicium)'
td_notes '[285]'
td_notes '(unknown)'
td_notes '(unknown)'
td_notes '1996'
index_name 'copernicium'
extra_index_name '112'
end
entry do
td_notes '113'
td_notes 'Nh'
td_notes '[nihonium](https://en.wikipedia.org/wiki/Nihonium)'
td_notes '[284]'
td_notes '(unknown)'
td_notes '(unknown)'
td_notes '2003'
index_name 'nihonium'
extra_index_name '113'
end
entry do
td_notes '114'
td_notes 'Fl'
td_notes '[flerovium](https://en.wikipedia.org/wiki/Flerovium)'
td_notes '[289]'
td_notes '(unknown)'
td_notes '(unknown)'
td_notes '1998'
index_name 'flerovium'
extra_index_name '114'
end
entry do
td_notes '115'
td_notes 'Mc'
td_notes '[moscovium](https://en.wikipedia.org/wiki/Moscovium)'
td_notes '[288]'
td_notes '(unknown)'
td_notes '(unknown)'
td_notes '2003'
index_name 'moscovium'
extra_index_name '115'
end
entry do
td_notes '116'
td_notes 'Lv'
td_notes '[livermorium](https://en.wikipedia.org/wiki/Livermorium)'
td_notes '[293]'
td_notes '(unknown)'
td_notes '(unknown)'
td_notes '2000'
index_name 'livermorium'
extra_index_name '116'
end
entry do
td_notes '117'
td_notes 'Ts'
td_notes '[tennessine](https://en.wikipedia.org/wiki/Tennessine)'
td_notes '[294]'
td_notes '(unknown)'
td_notes '(unknown)'
td_notes '2010'
index_name 'tennessine'
extra_index_name '117'
end
entry do
td_notes '118'
td_notes 'Og'
td_notes '[oganesson](https://en.wikipedia.org/wiki/Oganesson)'
td_notes '[294]'
td_notes '(unknown)'
td_notes '(unknown)'
td_notes '2002'
index_name 'oganesson'
extra_index_name '118'
end
end
notes "
* Based on period table data by [Chris Andrejewski](https://github.com/andrejewski/periodic-table)
* Converted by [Daniel Griscom](http://suitable.com)
"
end