question_answer

There is very little difference in acid strength in the series  \[{{H}_{3}}P{{O}_{3}}\]and \[{{H}_{3}}P{{O}_{2}}\]because

A)  Phosphorus in these acids exists in same oxidation states.                         ;

B)  Number of unprotonated oxygen responsible for increase of acidity remains the same

C)  Phosphorus is not a highly electronegative element

D)  Phosphorus oxides are less basic.