• # question_answer 6) ${{[Si{{F}_{6}}]}^{2-}}$is known whereas ${{[SiC{{l}_{6}}]}^{2-}}$is not. Give possible reasons.

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 pair of chloride ion and $S{{i}^{4+}}$is not very strong.