Chemical element List of the 118 known chemical elements List of the 118 known chemical elements

| Atomic_no_ | Name_ | Symbol | Group_ | Period | Block | State_at_STP | Occurrence | Description_ |
|---|---|---|---|---|---|---|---|---|
| 1 | Hydrogen | H | 1 | 1 | s | Gas | Primordial | Non-metal |
| 2 | Helium | He | 18 | 1 | s | Gas | Primordial | Noble gas |
| 3 | Lithium | Li | 1 | 2 | s | Solid | Primordial | Alkali metal |
| 4 | Beryllium | Be | 2 | 2 | s | Solid | Primordial | Alkaline earth metal |
| 5 | Boron | B | 13 | 2 | p | Solid | Primordial | Metalloid |
| 6 | Carbon | C | 14 | 2 | p | Solid | Primordial | Non-metal |
| 7 | Nitrogen | N | 15 | 2 | p | Gas | Primordial | Non-metal |
| 8 | Oxygen | O | 16 | 2 | p | Gas | Primordial | Non-metal |
| 9 | Fluorine | F | 17 | 2 | p | Gas | Primordial | Halogen |
| 10 | Neon | Ne | 18 | 2 | p | Gas | Primordial | Noble gas |