All practice pages/Interatomic theory

Elements

An article on every element: where it sits, what it looks like, where it comes from, who found it and what it is used for. Tap a cell or search by name, symbol or number.

123456789101112131415161718123456757-7189-103H11.008He24.00Li36.94Be49.01B510.81C612.01N714.01O816.00F919.00Ne1020.18Na1122.99Mg1224.31Al1326.98Si1428.09P1530.97S1632.06Cl1735.45Ar1839.95K1939.10Ca2040.08Sc2144.96Ti2247.87V2350.94Cr2452.00Mn2554.94Fe2655.85Co2758.93Ni2858.69Cu2963.55Zn3065.38Ga3169.72Ge3272.63As3374.92Se3478.97Br3579.90Kr3683.80Rb3785.47Sr3887.62Y3988.91Zr4091.22Nb4192.91Mo4295.95Tc43[98]Ru44101.07Rh45102.91Pd46106.42Ag47107.87Cd48112.41In49114.82Sn50118.71Sb51121.76Te52127.60I53126.90Xe54131.29Cs55132.91Ba56137.33La57138.91Ce58140.12Pr59140.91Nd60144.24Pm61[145]Sm62150.36Eu63151.96Gd64157.25Tb65158.93Dy66162.50Ho67164.93Er68167.26Tm69168.93Yb70173.05Lu71174.97Hf72178.49Ta73180.95W74183.84Re75186.21Os76190.23Ir77192.22Pt78195.08Au79196.97Hg80200.59Tl81204.38Pb82207.2Bi83208.98Po84[209]At85[210]Rn86[222]Fr87[223]Ra88[226]Ac89[227]Th90232.04Pa91231.04U92238.03Np93[237]Pu94[244]Am95[243]Cm96[247]Bk97[247]Cf98[251]Es99[252]Fm100[257]Md101[258]No102[259]Lr103[266]Rf104[267]Db105[268]Sg106[269]Bh107[270]Hs108[269]Mt109[278]Ds110[281]Rg111[282]Cn112[285]Nh113[286]Fl114[289]Mc115[290]Lv116[293]Ts117[294]Og118[294]
118 elementsPhoto credits