Discussion Forum



1)

Amongest 

$NO_{3}^{-},AsO_{3}^{3-},CO_{3}^{2-},ClO_{3}^{-},SO_{3}^{2-}$ and $BO_{3}^{3-}$

 the non-plannar species are 


A) $CO_{3}^{2-},SO_{3}^{2-} $ and $BO_{3}^{2-}$

B) $AsO_{3}^{3-} ,ClO_{3}^{-}$ and $SO_{3}^{2-}$

C) $NO_{3}^{-} , CO_{3}^{2-} $ and $ BO_{3}^{3-}$

D) $SO_{3}^{2-}, NO_{3}^{-}$ and $BO_{3}^{3-}$

Answer:

Option B

Explanation:

$AsO_{3}^{3-} ,ClO_{3}^{-}$ and $SO_{3}^{2-}$   have sp2 hybridisation and hence are non- planar species, while 

$NO_{3}^{-} , CO_{3}^{2-} $  and $ BO_{3}^{3-}$ have sp2 hybridisation and hence are planar species