Question

Why does SH6 not exist, but SF6 exists?

Answer 1

Dear Student,....... Sulfur exist in its highest oxidation state when it is combined with highly electronegative elements like F . Because of high electronegativity of fluorine, the +6 charge develop on S leads to contraction of d orbital which is favourable to overlap with F atoms. This contraction of orbital is not possible in case of H. Hence,SH6 not exists. Regards.