1.

The number of P rarr Oor P = O and P - O - H bonds in H_3PO_4 are :

Answer»

3,1
2,2
1,2
1,3

Solution :`{:(OH,P-O-" BONDS is one (1)"),(" "|,),(HO-P-OH,"P - O- HBONDS is three(3)"),(" "|,),(OH,):}`


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