Question

The true statement for the acids of phosphorus, H₃PO₂, H₃PO₃ and H₃PO₄ is 

(a) the order of their acidity is H₃PO₄ > H₃PO₃ > H₃PO₂ 

(b) all of them are reducing in nature 

(c) all of them are tribasic acids 

(d) the geometry of phosphorus is tetrahedral in all the three

Answer 1

The correct option is (d) the geometry of phosphorus is tetrahedral in all the three.

Explanation:

H₃PO₂, H₃PO₃ and H₃PO₄ contain one, two and three ionisable hydrogen atoms respectively.