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Question

Which of the following is not an electron-deficient compound ?

A
BeEt2
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B
AlMe3
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C
B2H6
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D
Si(CH3)4
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Solution

The correct option is D Si(CH3)4
Tetramethyl silane Si(CH3)4 is not an electron-deficient compound whereas others are electron-deficient compounds.

In Si(CH3)4, the central silicon atom has 4 electrons.

4 C atoms of 4 methyl groups hare 4 electrons. So Si has now 8 electrons in its valence shell and has completed its octet.

Hence, the correct option is D

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