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Comment on the nature of two S-O bonds formed in SO_(2) molecule ? Are the two S-O bonds in this molecule equal ? |
| Answer» Solution :In `SO_(2)`, S is `sp^(2)`-hybridized. TWO of the THREE `sp^(2)`-ORBITALS form two `sigma`-bonds with OXYGEN atoms while the third contains the lone pair of electrons. S is now left with one half-filled p-orbital and one half-filled d-orbital. These form one `p pi - p pi` and one `p pi - d pi` double BOND with oxygen atom. Thus, the two S-O bonds appear to be different but actually they are equal (bond length = 143 pm) due to resonance. | |