Question

which of the following are isostructural
Ch3+ and ch3- nh4+ and bh4-
So4 2- and bf3
Nh2- and bef2

Answer 1

Answer:

Option 2 is having same hybridisation and same structure.

So NH4+ and BH4- are isostructural.

For NH+4Hybridisation H= 12[Valence electron of the central atom + No of surrounding monovalent atom− cation + anion] = 12[5 + 4 −1 + 0] = 82 = 4No of LP =Hybridisation − No ofsurrounding atom = 4 − 4 = 0So the hybridisation is sp3 and the structure is tetrahedralFor BH−4Hybridisation H= 12[Valence electron of the central atom + No of surrounding monovalent atom− cation + anion] = 12[3 + 4 −0 + 1] = 82 = 4No of LP =Hybridisation − No ofsurrounding atom = 4 − 4 = 0So the hybridisation is sp3 and the structure is tetrahedron.

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