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Account for the following : (i)The exp...

Account for the following :
(i)The experimentally determined `N-F` bond length in `NF_3` is greater than the sum of the single bond covalent radii of `N` and `F`.
(ii) `Mg_3 N_2` when reacted with water gives `NH_3` but `HCl` is not obtained from `MgCl_2` on reaction with water at room temperature.
(iii) `(SiH_3)_3 N` is a weaker base than `(CH_3)_3 N`.

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The experimentally determined N-F bond length in NF_(3) is _____than the sum of the single covalent bond radii of N and F .

The experimentally determined N-F bond length in NF_(3) is greater than the sum of the covalent raddi of N and F. Assign reason.

(a) PF_5 is known, but NF_5 is not. Why ? (b) The experimentally determined N-F bond length in NF_3 is greater than the sum of single convalent radii of N and F .

(SiH_(3)) is a weaker base than (CH_(3))_(3) N. Explain.

1mol Mg_(3)N_(2) on reaction with water gives

Mg_3 N_2 on reaction with water gives off NH_3 , but MgCl_2 on reaction with water does not give HCl at room temperature.

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