1.

Choose the correct options :

Answer»

In `N_2H_4`, the N-N bond length is greater than expected value
In trisilyl AMINE `(SiH_3)_3` N, the Si-N bond length is lesser than expected value
The bond ANGLE in `OF_2` is lesser than `OC l_2`
The Be atom in `BeCl_2(s)` in `sp^3` hybridised

Solution :(A)Structure is similar to that of ethane. Each N atom is tetrahedrally surrounded by one N , two H and a lone pair.The two halves of the molecules are rotated `95^@` about N-N bond and occupy a gauche (non-eclipsed) conformation.The bond length is 1.45 Å.

(B)Has partial double bond character DUE to `ppi-dpi` delocalisation
(C )`OF_2=1.3^@` (approximate) and `OCl_2=112^@`(approximate)
(D)


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