| Atomic Number | Symbol | Element | CAS Number |
|---|---|---|---|
| 1 | H | Hydrogen | CAS1333-74-0 |
| 2 | He | Helium | CAS7440-59-7 |
| 3 | Li | Lithium | CAS7439-93-2 |
| 4 | Be | Beryllium | CAS7440-41-7 |
| 5 | B | Boron | CAS7440-42-8 |
| 6 | C | Carbon | CAS7440-44-0 |
| 7 | N | Nitrogen | CAS7727-37-9 |
| 8 | O | Oxygen | CAS7782-44-7 |
| 9 | F | Fluorine | CAS7782-41-4 |
| 10 | Ne | Neon | CAS7440-01-9 |
| 11 | Na | Sodium | CAS7440-23-5 |
| 12 | Mg | Magnesium | CAS7439-95-4 |
| 13 | Al | Aluminium | CAS7429-90-5 |
| 14 | Si | Silicon | CAS7440-21-3 |
| 15 | P | Phosphorus | CAS7723-14-0 |
| 16 | S | Sulfur | CAS7704-34-9 |
| 17 | Cl | Chlorine | CAS7782-50-5 |
| 18 | Ar | Argon | CAS7440-37-1 |
| 19 | K | Potassium | CAS7440-09-7 |
| 20 | Ca | Calcium | CAS7440-70-2 |
| 21 | Sc | Scandium | CAS7440-20-2 |
| 22 | Ti | Titanium | CAS7440-32-6 |
| 23 | V | Vanadium | CAS7440-62-2 |
| 24 | Cr | Chromium | CAS7440-47-3 |
| 25 | Mn | Manganese | CAS7439-96-5 |
| 26 | Fe | Iron | CAS7439-89-6 |
| 27 | Co | Cobalt | CAS7440-48-4 |
| 28 | Ni | Nickel | CAS7440-02-0 |
| 29 | Cu | Copper | CAS7440-50-8 |
| 30 | Zn | Zinc | CAS7440-66-6 |
| 31 | Ga | Gallium | CAS7440-55-3 |
| 32 | Ge | Germanium | CAS7440-56-4 |
| 33 | As | Arsenic | CAS7440-38-2 |
| 34 | Se | Selenium | CAS7782-49-2 |
| 35 | Br | Bromine | CAS7726-95-6 |
| 36 | Kr | Krypton | CAS7439-90-9 |
| 37 | Rb | Rubidium | CAS7440-17-7 |
| 38 | Sr | Strontium | CAS7440-24-6 |
| 39 | Y | Yttrium | CAS7440-65-5 |
| 40 | Zr | Zirconium | CAS7440-67-7 |
| 41 | Nb | Niobium | CAS7440-03-1 |
| 42 | Mo | Molybdenum | CAS7439-98-7 |
| 43 | Tc | Technetium | CAS7440-26-8 |
| 44 | Ru | Ruthenium | CAS7440-18-8 |
| 45 | Rh | Rhodium | CAS7440-16-6 |
| 46 | Pd | Palladium | CAS7440-05-3 |
| 47 | Ag | Silver | CAS7440-22-4 |
| 48 | Cd | Cadmium | CAS7440-43-9 |
| 49 | In | Indium | CAS7440-74-6 |
| 50 | Sn | Tin | CAS7440-31-5 |
| 51 | Sb | Antimony | CAS7440-36-0 |
| 52 | Te | Tellurium | CAS13494-80-9 |
| 53 | I | Iodine | CAS7553-56-2 |
| 54 | Xe | Xenon | CAS7440-63-3 |
| 55 | Cs | Cesium | CAS7440-46-2 |
| 56 | Ba | Barium | CAS7440-39-3 |
| 57 | La | Lanthanum | CAS7439-91-0 |
| 58 | Ce | Cerium | CAS7440-45-1 |
| 59 | Pr | Praseodymiu | CAS7440-10-0 |
| 60 | Nd | Neodymium | CAS7440-00-8 |
| 61 | Pm | Promethium | CAS7440-12-2 |
| 62 | Sm | Samarium | CAS7440-19-9 |
| 63 | Eu | Europium | CAS7440-53-1 |
| 64 | Gd | Gadolinium | CAS7440-54-2 |
| 65 | Tb | Terbium | CAS7440-27-9 |
| 66 | Dy | Dysprosium | CAS7429-91-6 |
| 67 | Ho | Holmium | CAS7440-60-0 |
| 68 | Er | Erbium | CAS7440-52-0 |
| 69 | Tm | Thulium | CAS7440-30-4 |
| 70 | Yb | Ytterbium | CAS7440-64-4 |
| 71 | Lu | Lutetium | CAS7439-94-3 |
| 72 | Hf | Hafnium | CAS7440-58-6 |
| 73 | Ta | Tantalum | CAS7440-25-7 |
| 74 | W | Tungsten | CAS7440-33-7 |
| 75 | Re | Rhenium | CAS7440-15-5 |
| 76 | Os | Osmium | CAS7440-04-2 |
| 77 | Ir | Iridium | CAS7439-88-5 |
| 78 | Pt | Platinum | CAS7440-06-4 |
| 79 | Au | Gold | CAS7440-57-5 |
| 80 | Hg | Mercury | CAS7439-97-6 |
| 81 | Tl | Thallium | CAS7440-28-0 |
| 82 | Pb | Lead | CAS7439-92-1 |
| 83 | Bi | Bismuth | CAS7440-69-9 |
| 84 | Po | Polonium | CAS7440-08-6 |
| 85 | At | Astatine | CAS7440-68-8 |
| 86 | Rn | Radon | CAS10043-92-2 |
| 87 | Fr | Francium | CAS7440-73-5 |
| 88 | Ra | Radium | CAS7440-14-4 |
| 89 | Ac | Actinium | CAS7440-34-8 |
| 90 | Th | Thorium | CAS7440-29-1 |
| 91 | Pa | Protactinium | CAS7440-13-3 |
| 92 | U | Uranium | CAS7440-61-1 |
| 93 | Np | Neptunium | CAS7439-99-8 |
| 94 | Pu | Plutonium | CAS7440-07-5 |
| 95 | Am | Americium | CAS7440-35-9 |
| 96 | Cm | Curium | CAS7440-51-9 |
| 97 | Bk | Berkelium | CAS7440-40-6 |
| 98 | Cf | Californium | CAS7440-71-3 |
| 99 | Es | Einsteinium | CAS7429-92-7 |
| 100 | Fm | Fermium | CAS7440-72-4 |
| 101 | Md | Mendeleviu | CAS7440-11-1 |
| 102 | No | Nobelium | CAS10028-14-5 |
| 103 | Lr | Lawrencium | CAS22537-19-5 |
| 104 | Rf | Rutherfordiu | CAS53850-36-5 |
| 105 | Db | Dubnium | CAS53850-35-4 |
| 106 | Sg | Seaborgium | CAS54038-81-2 |
| 107 | Bh | Bohrium | CAS54037-14-8 |
| 108 | Hs | Hassium | CAS54037-57-9 |
| 109 | Mt | Meitnerium | CAS54038-01-6 |
| 110 | Ds | Darmstadtiu | CAS54083-77-1 |
| 111 | Rg | Roentgeniu | CAS54386-24-2 |
| 112 | Cn | Copernicium | CAS54084-26-3 |
| 113 | Nh | Nihonium | CAS54084-70-7 |
| 114 | Fl | Flerovium | CAS54085-16-4 |
| 115 | Mc | Moscovium | CAS54085-64-2 |
| 116 | Lv | Livermorium | CAS54100-71-9 |
| 117 | Ts | Tennessine | CAS87658-56-8 |
| 118 | Og | Oganesson | CAS54144-19-3 |