The basicity of the acids H3PO2, H3PO3, H3PO and H4P2O7 are respectively

(A) 1,2,3,7

(B) 2,3,4,7

(C) 1,2,3,4

(D) 1,2,3,5

Concept Videos :-

#2 | 15th Group: Properties: II
#3 | 15th Group: Ammonia

Concept Questions :-

group 15 ,preparation and properties
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