Chemical Bonding and Molecular Structure

Question

The correct order of bond angles (smallest first) in H₂S, NH₃, BF_3 and SiH₄ is

Accepted Answer

Option C. 1. In H₂S molecule, central atom S is a 3rd period element and according to Dragos rule, when a 3rd period or higher period element overlap with a small element whose electronegetivity is low then that over lapping cannot be a effective overlapping, because of higher size of 3rd or higher periods element and smaller size of low electronegative element.

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Chemical Bonding and Molecular Structure

More on Chemical Bonding and Molecular Structure