1.

Choose the correct order for the energy barrier to rotation around the B-N bond :-

Answer»

`H_2B-NR_2 lt BH(NR_2)_2 lt B(NR_2)_3`
`B(NR_2)_3 lt BH(NR_2)_2 lt BH_2-NR_2`
`BH(NH_2)_2 GT B(NR_2)_3 gt BH_2-NR_2`
`BH_2 -NR_2 gt B(NR_2)_3 gt BH(NR_2)_2`

ANSWER :B


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