Question

The valency of O in phosphoric acid is:

• A. 2
• B. 4
• C. 6
• D. 2

Answer 1

The correct option is D 2

The lewis dot structure of phosphoric acid $H_{3}P{O}_4$ is:


$O$ forms $2$ covalent bonds with its neighbouring phosphorus and hydrogen atoms and hence the valency of $O$ is $2$.