Question

$N_2{O}_3,N_2{O}_5,P_4{O}_6,P_4{O}_7,H_4{P}_2{O}_5,H_2{S}_2{O}_3,H_2{S}_2{O}_5$
Total number of compounds having at least one bridging oxo group among the molecules given above is

Answer 1

So the compounds that has atleast one bridging oxo group are $P_4{O}_7,N_2{O}_5,H_4{P}_2{O}_5\text{and}{P}_4{O}_6$