Question

There is very little difference in acid strength in the series $H_{3}P{O}_4,H_{3}P{O}_3$ and $H_{3}P{O}_2$, because :

• A. phosphorus in these acids exists in different oxidation states.
• B. the hydrogens in these acids are not all bound to the phosphorus
• C. phosphorus is highly electro negative element
• D. phosphorus oxides are less basic

Answer 1

The correct option is B the hydrogens in these acids are not all bound to the phosphorus

There is little difference in the strength of these acids because phosphorous is not a highly electro-negative element, i.e., its oxides are less basic.