A) \[NO_{3}^{-}\]
B) \[SO_{3}^{2-}\]
C) \[BO_{3}^{3-}\]
D) \[CO_{3}^{2-}\]
Correct Answer: B
Solution :
\[SO_{3}^{2-}\]has three o-bonds and one\[p\pi -d\pi \]bond. S is\[s{{p}^{3}}-\]hybridised and one of the \[s{{p}^{3}}-\]hybrid orbitals is occupied by a lone pair of electrons.
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