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SiF(6)^(2-) exist but not CF(6)^(2-) exp...

`SiF_(6)^(2-)` exist but not `CF_(6)^(2-)` explain why ?

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The correct Answer is:
Absence of `d-orbitals` in C.
`N//A`
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Assertion SiF_(6)^(2-) anion exists but CF_(6)^(2-) does not Reasoning Si atom vacnat d-orbital while C-atom has not .

Assertion: SiF_(6)^(2-) is known but SiCl_(6)^(2-) is not. Reason: Size of fluorine is small and its lone pair of electrons intersects with d-orbitals of Si strongly.

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