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Elements # 1-20
Atomic number | symbol/Element |
---|---|
1 | H (hydrogen) |
2 | He (helium) |
3 | Li (lithium) |
4 | Be (beryllium) |
5 | B (boron) |
6 | C (carbon) |
7 | N (nitrogen) |
8 | 0 (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 | A (argon) |
19 | K (potassium) |
20 | Ca (calcium) |