1.

Identify the correct order :

Answer»

<P>`[V(CO)_(6)]^(-) lt [CR(CO)_(6)]`(C-O bond length order )
`H_(2) lt He` (Boiling point order)
`NH_(2)^(-) gt H_(2)O` (Bond angle order)
All are correct

Solution :
`H_(2)OgtNH_(2)^(-)`
(Bond angle)
(b) B. P. of `H_(2) gt He`, due to greater surface area of `H_(2)`
(a) C-O B. L. order `[V(CO)_(6) ]^(-) gt [Cr (CO)_(6)]`


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