1.

Select that pairs in which bond angle of first member is higher than second one.A. `BrO_3^(-), CrO_3^(-)`B. `Asl_3, Sbl_3`C. `SbBr_3, SbI_3`D. `NF_3, NH_3`

Answer» Correct Answer - B
(A)The bond angle decreases with decrease in electronegativies and increase in size of central atom. Hence the correct order of O-X-O bond angle is `CiO_3^(-) gt BrO_3^(-)`
`{:(,CIO_3^(-),107^(@),BrO_3^(-),104^@),((B),AsI_3,100.2^@ ,Sbl_3,90^@),(( C),SbBr_3,98.2^@,Sbl_3,99^@),((D),NH_3 , 106.6^@ ,NF_3,102.2^@):}`


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