1.

Both N(SiH_(3))_(3) and NH(SiH_(3))_(2) compounds have trigonal planar skeleton. Incorrect statement about both compounds is :

Answer»

`SiNSi` bond ANGLE in `NH(SiH_(3))_(2)gtSiNSi` bond angle in `N(SiH_(3))_(3))`
`N-Si` bond LENGTH in `NH(SiH_(3))_(2)gtN-Si` bond length in `N(SiH_(3))_(3))`
`N-Si` bond length in `NH(SiH_(3))_(2)ltN-Si` bond length in `N(SiH_(3))_(3))`
Back bonding strength in`NH(SiH_(3))_(2)gt` Back bonding strength in `N(SiH_(3))_(3))`

Solution :`to " In" NH(SiH_(3))_(2)` electron density or lone pair at N-atom is INVOLVED in back bonding only with two empty 3d-obitals of two silicon atoms while in `N(SiH_(3))_(2)` it is involved with three 3d-orbitals of three silicon atom.
`to` strength of back bonding in `NH(SiH_(3))_(2)` is higher than in `N(SiH_(3))_(2)` hence N-Si bond length in `NH(SiH_(3))_(2)` is LESS than that of in `N(SiH_(3))_(2)`.


Discussion

No Comment Found

Related InterviewSolutions