Question

valence electron of 1 to20 elements

Answer 1

Explanation:

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

Answer 2

Answer:

Valency of Hydrogen 1

Valency of Helium 0

Valency of Lithium 1

Valency of Beryllium 2

Valency of Boron 3

Valency of Carbon 4

Valency of Nitrogen 3

Valency of Oxygen 2

Valency of Fluorine 1

Valency of Neon 0

Valency of Sodium (Na) 1

Valency of Magnesium (Mg) 2

Valency of Aluminium 3

Valency of Silicon 4

Valency of Phosphorus 3

Valency of Sulphur 2

Valency of Chlorine 1

Valency of Argon 0

Valency of Potassium (K) 1

Valency of Calcium 2