List the valency of the first 30 elements of the periodic table.
Valency is the number of electrons an atom gains or loose in order to gain the stable electronic configuration.
The valency of the first 30 elements of the periodic table is given below.
| Element | Atomic Number | Valency |
| Valency of Hydrogen | 1 | 1 |
| Valency of Helium | 2 | 0 |
| Valency of Lithium | 3 | 1 |
| Valency of Beryllium | 4 | 2 |
| Valency of Boron | 5 | 3 |
| Valency of Carbon | 6 | 4 |
| Valency of Nitrogen | 7 | 3 |
| Valency of Oxygen | 8 | 2 |
| Valency of Fluorine | 9 | 1 |
| Valency of Neon | 10 | 0 |
| Valency of Sodium (Na) | 11 | 1 |
| Valency of Magnesium (Mg) | 12 | 2 |
| Valency of Aluminium | 13 | 3 |
| Valency of Silicon | 14 | 4 |
| Valency of Phosphorus | 15 | 3 |
| Valency of Sulphur | 16 | 2 |
| Valency of Chlorine | 17 | 1 |
| Valency of Argon | 18 | 0 |
| Valency of Potassium (K) | 19 | 1 |
| Valency of Calcium | 20 | 2 |
| Valency of Scandium | 21 | 3 |
| Valency of Titanium | 22 | 4 |
| Valency of Vanadium | 23 | 5,4 |
| Valency of Chromium | 24 | 2 |
| Valency of Manganese | 25 | 7, 4, 2 |
| Valency of Iron (Fe) | 26 | 2, 3 |
| Valency of Nickel | 27 | 3, 2 |
| Valency of Cobalt | 28 | 2 |
| Valency of Copper (Cu) | 29 | 2, 1 |
| Valency of Zinc | 30 | 2 |
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