Question

valency of element O is
a.1
b.3
c.5
d.2​

Answer 1

Answer:

d. 2

Explanation:

Valency of element O is 2

Hope it helps.

Answer 2

Valency is the combining power of an element. Elements in the same group of the periodic table have the same valency. The valency of an element is related to how many electrons are in the outer shell.

I think O is oxygen.

The valency of oxygen is 2, because it needs two atoms of hydrogen to form water.