Which one of the following compounds of Groups-14 elements is not known?

[G e C l_{6}]^{2 -}

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[S i F_{6}]^{2 -}

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[S n (O H)_{6}]^{2 -}

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[S i C l_{6}]^{2 -}

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Solution

The correct option is D $[S i C l_{6}]^{2 -}$
$[S i C l_{6}]^{2 -}$ is not known. The main reasons are :
(i) six large chloride ions cannot be accommodated around $S i^{4 +}$ due to limitation of its size
(ii) Interaction between lone lone pair of chloride ion and $S i^{4 +}$ is not very strong.

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Which one of the following compounds of Groups-14 elements is not known?

The correct option is D [SiCl6]2−[SiCl6]2− is not known. The main reasons are : (i) six large chloride ions cannot be accommodated around Si4+ due to limitation of its size (ii) Interaction between lone lone pair of chloride ion and Si4+ is not very strong.

The correct option is D $[S i C l_{6}]^{2 -}$
$[S i C l_{6}]^{2 -}$ is not known. The main reasons are :
(i) six large chloride ions cannot be accommodated around $S i^{4 +}$ due to limitation of its size
(ii) Interaction between lone lone pair of chloride ion and $S i^{4 +}$ is not very strong.