1.

{:("COLUMN-I","COLUMN-II"),("(Elements)","(Covalency)"),((A)'O' " atom in "O_(3),(p)1),((B)'S' " atom in hyposulphorous acid",(q)2),((C )'N'" atom in "NO^(+)and N_(2)O_(4),(r )3),((D)'N' " atom in "N_(3)H,(s) 4):}

Answer»


Solution :A) Covalency = No. of COVALENT bond , Middle = 3, Oxygen (a) = 2, Oxygen (b) = 1
B) `H_(2)S_(2)O_(4)=` Hyposulphurous ACID C)D) `H-overset(* *)N=overset(o+)N=overset(* *o+)(N: )`


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