SiF62- is known but SiCl62- is not, why? – InterviewSolution

1.	SiF62- is known but SiCl62- is not, why?
Answer» Due to smaller size of F as compared to Cl, steric repulsions will be less in SiF₆^2- than in SiCl₆^2-. Because of smaller S-F bond as compared to S-Cl bond, the interaction of F lone pair of electrons with Si is stronger than that of Cl lone pairs.

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