Question

What is the n-factor of $H_{3}P{O}_3$ ?

• A. 1
• B. 1 or 2
• C. 1 or 2 or 3
• D. 3

Answer 1

The correct option is B

1 or 2

If we look at the structure of $H_{3}P{O}_3$

Only the Hydrogen's attached to Oxygen atoms are available for participation in reactions; while the H atom attached to phosphorous is not replaceable.

_{So, n-factor of $H_{3}P{O}_3$ could be either 1 or 2 depending upon the extent of the reaction.}