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Trisilyamine (SiH(3))(3) N is...

Trisilyamine `(SiH_(3))_(3)` N is

A

trigonal pyramidal and acidic

B

trigonal pyramidal and basic

C

trigonal pyramidal and neutral

D

trigonal planar and weakly basic

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The correct Answer is:
D
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In trimethylamine, the nitrogen has a pyramidal geometry whereas in trisilylamine N(SiH_(3)) _(3), it has a planar geometry. What is the reaons behind this ?

The length of the N - Si bond in (SiH_(3))_(3) N is shorter than what is normally expected for an N - Si single bond. This is due to

Assertion In case of (CH_(3))_(3)N geometry is pyramidal but in case of (SiH_(3))_(3)N it is planar Reasoning The maximum covalency of Si is six but that of C is four .

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The geometry with respect ot the central atom of the following molecules are N(SiH_(3))_(3), Me_(3)N , (SiH_(3))_(3) P

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