Question

valency of atoms with atomic numbers fast​

Answer 1

Explanation:

If we know the valency of elements, then we can easily write formulae of compounds of those elements. For example –

Formula of compound carbon tetrachloride –

Symbol C Cl

Valency 4 1

Formula: CCl4

Formula of compound magnesium chloride –

Symbol Mg Cl

Valency 2 1

Formula: MgCl2

Answer 2

Answer:

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 Cobalt 27 *3, 2

Valency of Nickel 28 *2

Valency of Copper (Cu) 29 *2, 1

Valency of Zinc 30 2