Nuclides
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Free web tool · 118 elements
Interactive periodic table
Explore every element by atomic number, category and physical state. Open a tile for its atomic and physical properties, then follow through to its isotopes.
118 elements
Group numbers run across the top. On a phone, swipe inside the table or choose Compact list. Filters hide non-matching tiles without changing their positions.
Period 6 Actinides
Period 7 1 H Hydrogen 1.0080(2) 2 He Helium 4.002 602(2) 3 Li Lithium 6.94(6) 4 Be Beryllium 9.012 1831(5) 5 B Boron 10.81(2) 6 C Carbon 12.011(2) 7 N Nitrogen 14.007(1) 8 O Oxygen 15.999(1) 9 F Fluorine 18.998 403 162(5) 10 Ne Neon 20.1797(6) 11 Na Sodium 22.989 769 28(2) 12 Mg Magnesium 24.305(2) 13 Al Aluminium 26.981 5384(3) 14 Si Silicon 28.085(1) 15 P Phosphorus 30.973 761 998(5) 16 S Sulfur 32.06(2) 17 Cl Chlorine 35.45(1) 18 Ar Argon 39.95(16) 19 K Potassium 39.0983(1) 20 Ca Calcium 40.078(4) 21 Sc Scandium 44.955 907(4) 22 Ti Titanium 47.867(1) 23 V Vanadium 50.9415(1) 24 Cr Chromium 51.9961(6) 25 Mn Manganese 54.938 043(2) 26 Fe Iron 55.845(2) 27 Co Cobalt 58.933 194(3) 28 Ni Nickel 58.6934(4) 29 Cu Copper 63.546(3) 30 Zn Zinc 65.38(2) 31 Ga Gallium 69.723(1) 32 Ge Germanium 72.630(8) 33 As Arsenic 74.921 595(6) 34 Se Selenium 78.971(8) 35 Br Bromine 79.904(3) 36 Kr Krypton 83.798(2) 37 Rb Rubidium 85.4678(3) 38 Sr Strontium 87.62(1) 39 Y Yttrium 88.905 838(2) 40 Zr Zirconium 91.222(3) 41 Nb Niobium 92.906 37(1) 42 Mo Molybdenum 95.95(1) 43 Tc Technetium [97] 44 Ru Ruthenium 101.07(2) 45 Rh Rhodium 102.905 49(2) 46 Pd Palladium 106.42(1) 47 Ag Silver 107.8682(2) 48 Cd Cadmium 112.414(4) 49 In Indium 114.818(1) 50 Sn Tin 118.710(7) 51 Sb Antimony 121.760(1) 52 Te Tellurium 127.60(3) 53 I Iodine 126.904 47(3) 54 Xe Xenon 131.293(6) 55 Cs Cesium 132.905 451 96(6) 56 Ba Barium 137.327(7) 57 La Lanthanum 138.905 47(7) 58 Ce Cerium 140.116(1) 59 Pr Praseodymium 140.907 66(1) 60 Nd Neodymium 144.242(3) 61 Pm Promethium [145] 62 Sm Samarium 150.36(2) 63 Eu Europium 151.964(1) 64 Gd Gadolinium 157.249(2) 65 Tb Terbium 158.925 354(7) 66 Dy Dysprosium 162.500(1) 67 Ho Holmium 164.930 329(5) 68 Er Erbium 167.259(3) 69 Tm Thulium 168.934 219(5) 70 Yb Ytterbium 173.045(10) 71 Lu Lutetium 174.966 69(5) 72 Hf Hafnium 178.486(6) 73 Ta Tantalum 180.947 88(2) 74 W Tungsten 183.84(1) 75 Re Rhenium 186.207(1) 76 Os Osmium 190.23(3) 77 Ir Iridium 192.217(2) 78 Pt Platinum 195.084(9) 79 Au Gold 196.966 570(4) 80 Hg Mercury 200.592(3) 81 Tl Thallium 204.38(1) 82 Pb Lead 207.2(1.1) 83 Bi Bismuth 208.980 40(1) 84 Po Polonium [209] 85 At Astatine [210] 86 Rn Radon [222] 87 Fr Francium [223] 88 Ra Radium [226] 89 Ac Actinium [227] 90 Th Thorium 232.0377(4) 91 Pa Protactinium 231.035 88(1) 92 U Uranium 238.028 91(3) 93 Np Neptunium [237] 94 Pu Plutonium [244] 95 Am Americium [243] 96 Cm Curium [247] 97 Bk Berkelium [247] 98 Cf Californium [251] 99 Es Einsteinium [252] 100 Fm Fermium [257] 101 Md Mendelevium [258] 102 No Nobelium [259] 103 Lr Lawrencium [262] 104 Rf Rutherfordium [267] 105 Db Dubnium [270] 106 Sg Seaborgium [269] 107 Bh Bohrium [270] 108 Hs Hassium [270] 109 Mt Meitnerium [278] 110 Ds Darmstadtium [281] 111 Rg Roentgenium [281] 112 Cn Copernicium [285] 113 Nh Nihonium [286] 114 Fl Flerovium [289] 115 Mc Moscovium [289] 116 Lv Livermorium [293] 117 Ts Tennessine [293] 118 Og Oganesson [294]
- Hydrogen
- Alkali metals
- Alkaline earth metals
- Transition metals
- Post-transition metals
- Metalloids
- Other nonmetals
- Halogens
- Noble gases
- Lanthanides
- Actinides
Reading the periodic table
Tiles show atomic number, symbol, name and atomic weight or bracketed isotope mass number. Rows are periods, and columns are groups. Lanthanides and actinides are displayed separately to keep the table compact; these rows belong to periods 6 and 7.
Categories follow the Nuclides App classification, including a separate color for hydrogen. This detached-series layout does not settle competing group-3 conventions. Unknown physical states are retained as unknown; category labels do not establish a measured bulk state for superheavy elements.
Sources and interpretation
Snapshot exported 24 October 2026 from the element assets used by Nuclides. Properties are a reference compilation, not a new evaluation. Missing values are shown as “Not available”. Density and phase depend on temperature, pressure and allotrope; retained conditions are part of the quoted property.
Atomic weight is dimensionless. Parentheses give uncertainty in the last quoted digits. A single integer in square brackets is an isotope mass number, not a standard atomic weight. The snapshot can differ from current evaluations; consult CIAAW standard atomic weights and the IUPAC periodic table for current values and conventions.
Element properties in the App snapshot are adapted from Wikipedia. Each element page links to its source article; text adaptations are available under CC BY-SA 4.0. No third-party images are included.
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