Question

valency of all elements and compounds​

Answer 1

Element Atomic Number Valency

Valency

of Hydrogen 1 1

Valency

of Helium 2 0

Valency

of Lithium। 3 1

Valency

of Beryllium 4 2

Answer 2

Answer:

valency of hydrogen -1

valency of helium -2

valency of lithium -3

valency of beryllium -4