NEET Chemistry The p-Block Elements (XII) Questions Solved

The strongest acid is

(A) H3PO2 

(B) H3PO3 

(C) H4P2O7 

(D) H3PO4 

The acidic strength of all these acids is almost same because each acid contains one terminal oxygen atom and the electronegativity of other atoms (P and H) present in these acids is almost same. However, strongest acid among these should be H4P2O7 

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