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Periodic Elements
| Term | Definition |
|---|---|
| 1 H | Hydrogen |
| 2 HE | Helium |
| 3 LI | Lithium |
| 4 BE | Beryllium |
| 5 B | Boron |
| 6 C | Carbon |
| 7 N | Nitrogen |
| 8 O | Oxygen |
| 9 F | Fluorine |
| 10 NE | Neon |
| 11 NA | Sodium |
| 12 MG | Magnesium |
| 13 AL | Aluminum |
| 14 SI | Silicon |
| 15 P | Phosphorus |
| 16 S | Sulfur |
| 17 CL | Chlorine |
| 18 AR | Argon |
| 19 K | Potassium |
| 20 CA | Calcium |
| 21 SC | Scandium |
| 22 TI | Titanium |
| 23 V | Vanadium |
| 24 CR | Chromium |
| 25 MN | Magnesium |
| 26 FE | Iron |
| 27 CO | Cobalt |
| 28 NI | Nickel |
| 29 CU | Copper |
| 30 ZN | Zinc |
| 31 GA | Gallium |
| 32 GE | Germanium |
| 33 AS | Arsenic |
| 34 SE | Selenium |
| 35 BR | Bromine |
| 36 KR | Krypton |
| 37 RB | Rubidium |
| 38 SR | Strontium |
| 39 Y | Yttrium |
| 40 ZR | Zirconium |
| 41 NB | Niobium |
| 42 MO | Molybdenum |
| 43 TC | Technetium |
| 44 RU | Ruthenium |
| 45 RH | Rhodium |
| 46 PD | Palladium |
| 47 AG | Silver |
| 48 CD | Cadmium |
| 49 IN | Indium |
| 50 SN | Tin |
| 51 SB | Antimony |
| 52 TE | Tellurium |
| 53 I | Iodine |
| 54 XE | Xenon |
| 55 CS | Caesium |
| 56 BA | Barium |
| 57 LA | Lanthanum |
| 58 CE | Cerium |
| 59 PR | Praseodymium |
| 60 ND | Neodymium |
| 61 PM | Promethium |
| 62 SM | Samarium |
| 63 EU | Europium |
| 64 GD | Gadolinium |
| 65 TB | Terbium |
| 66 DY | Dysprosium |
| 67 HO | Holmium |
| 68 ER | Erbium |
| 69 TM | Thulium |
| 70 YB | Ytterbium |
| 71 LU | Lutetium |
| 72 HF | Hafnium |
| 73 TA | Tantalum |
| 74 W | Tungsten |
| 75 RE | Rhenium |
| 76 OS | Osmium |
| 77 IR | Iridium |
| 78 PT | Platinum |
| 79 AU | Gold |
| 80 HG | Mercury |
| 81 TL | Thallium |
| 82 PB | Lead |
| 83 BI | Bismuth |
| 84 PO | Polonium |
| 85 AT | Astatine |
| 86 RN | Radon |
| 87 FR | Francium |
| 88 RA | Radium |
| 89 AC | Actinium |
| 90 TH | Thorium |
| 91 PA | Protactinium |
| 92 U | Uranium |
| 93 NP | Neptunium |
| 94 PU | Plutonium |
| 95 AM | Americium |
| 96 CM | Curium |
| 97 BK | Berkelium |
| 98 CF | Californium |
| 99 ES | Einsteinium |
| 100 FM | Fermium |
| 101 MD | Mendelevium |
| 102 NO | Nobelium |
| 103 LR | Lawrencium |
| 104 RF | Rutherfordium |
| 105 DB | Dubnium |
| 106 SG | Seaborgium |
| 107 BH | Bohrium |
| 108 HS | Hassium |
| 109 MT | Meitnerium |
| 110 DS | Darmstadtium |
| 111 RG | Roentgenium |
| 112 CN | Copernicium |
| 113 NH | Nihonium |
| 114 FL | Flerovium |
| 115 MC | Moscovium |
| 116 LV | Livermorium |
| 117 TS | Tennessine |
| 118 OG | Oganesson |