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Identify the correct statements from the...

Identify the correct statements from the following
I.`B_(2)H_(6)` is an electron deficient hydride.
II. `NH_(3)` and electron rich hydride.
III. `YbH_(2.55)` is an interstitial hydride.

A

I,II,III

B

II,III, IV

C

I,II, IV

D

I, III, IV

Text Solution

Verified by Experts

The correct Answer is:
C
(I)` B_(2) H_(6)` (diborane ) is an electron deficient hydride. This can be explained on the basis of structure given below.
3C - `2e^(-)` electron deficient bridge bond

(II) `NH_(3)` is electron rich hydride due to presence of lone pair of electrons.
(III) NaH is an ionic hydride, generally hydride of alkali metals are ionic.
Hence, statement III is incorrect.
(IV) `YbH_(2.55)` is an interstitial hydride. here, smaller atom like hydrogen present in interstitial space of Yb metal. Hence, it forms interstitial hydride.
Thus, option (C ) is correct.
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