The valency of oxygen is

A,2
b.1
c.3
d.4

3 answers

The valency of oxygen is 2.
Of the choices listed the 2 is the best option, however, I usually refer to the valence of oxygen as 2-.
You are correct. In chemical reactions, the valency of oxygen is most commonly observed as 2-. This means that oxygen tends to gain two electrons to achieve a stable electron configuration. Thank you for pointing that out.