Question

valency chart of elements 1 to 20​

Answer 1

Element Valency

Hydrogen 1

Helium 0

Lithium 1

Beryllium 2

Boron 3

Carbon 4

Nitrogen 3

Oxygen 2

Fluorine 1

Neon 0

Sodium 1

Magnesium 2

Aluminum 3

Silicon 4

Phosphorus 3

Sulphur 2

Chlorine 1

Argon 0

Potassium 1

Calcium 2

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