Question

How many of the following compounds have `(p pi-dpi)` multiple bonds
(i) `SO_(2)` (ii) `SO_(3)` (iii) `H SO_(4)^(Theta)` (iv) `SO_(4)^(2-)`
(v) `SO_(3)^(3-)` (vi) `H SO_(3)^(Theta)` .

Answer 1

Correct Answer - 4
`SO_(2) implies` one` (p pi -pi)` and one`( p pi -p pi)` bond
(ii) `SO_(3) implies` one` (p pi - p pi)` and two` (p pi - p pi )` bond
(iii) `HSO_(4)^(Theta)` and (iv) `SO_(4)^(2-)` both have `2(p pi -p pi)`bond
(v) `SO_(3)^(2-)` and (vi) `HSO_(4)^(2-)` both have one (p pi -p pi) multiple bonds .