How many of the following statements are correct ? (i)Among sp^3d,sp^3d^2 and sp^3d^3 hybridisation, the maximum number of 90^@ angles between bond pair bond pair of electrons is observed in sp^3d^2 hybridisation . (ii)Among SF_4,CF_4 and XeF_4, interatomic bond angle of 109^@28' is observed only in SF_4. (iii)Among N_2F_4,N_2F_2, and N_2 , the largest N-N bond length is found in N_2F_4. (iv)Among NF_3, NO_3^(-),BF_3,H_3O^+ and NH_3, [NH_3, H_3O^+] and [BF_3, NO_3^(-)] are isostructural pairs. (v)Among NH_3, PH_3, AsH_3, and SbH_3, SbH_3 has smallest bond angle. (vi)Among SbCl_3, SbBr_3, and Sbl_3 , Sbl_3 has the largest bond angle.

How many of the following statements are correct ? (i)Among sp^3d,sp^

1.	How many of the following statements are correct ? (i)Among sp^3d,sp^3d^2 and sp^3d^3 hybridisation, the maximum number of 90^@ angles between bond pair bond pair of electrons is observed in sp^3d^2 hybridisation . (ii)Among SF_4,CF_4 and XeF_4, interatomic bond angle of 109^@28' is observed only in SF_4. (iii)Among N_2F_4,N_2F_2, and N_2 , the largest N-N bond length is found in N_2F_4. (iv)Among NF_3, NO_3^(-),BF_3,H_3O^+ and NH_3, [NH_3, H_3O^+] and [BF_3, NO_3^(-)] are isostructural pairs. (v)Among NH_3, PH_3, AsH_3, and SbH_3, SbH_3 has smallest bond angle. (vi)Among SbCl_3, SbBr_3, and Sbl_3 , Sbl_3 has the largest bond angle.
Answer» Solution :(i)BOND pair-bond pair bond ANGLES in `sp^3d^2` are 12. (ii)`109^@28'` bond angle is observed only in `CF_4` (TETRAHEDRAL GEOMETRY) (iii)`N-=N(~~1.1CÅ)ltFN=NF(~~1.21Å)lt` `(1.49pm0.004)` (iv)`BF_3` and `NO_3^(-)` ,both trigonal planar , `NF_3` and `H_3O^+`,both trigonal pyramidal. (v)ORDER is `{:(NH_3gtPH_3gtAsH_3gtSbH_3),(106^@6" " 93.8^@ " " 91.83^@ " " 91.3^@):}` (v)Order is `{:(Sbl_3gtSbBr_3gtSbCl_3),(99^@"" 98.2^@ "" 97.1^@):}`