Question

Amongst $N{O}_3^{-},As{O}_3^{3-},C{O}_3^{2-},Cl{O}_3^{-},S{O}_3^{2-}$ and $B{O}_3^{3-}$, the non-planar species are :

• A. $N{O}_3^{-},C{O}_3^{2-}$ and $B{O}_3^{3-}$
• B. $S{O}_3^{2-},Cl{O}_3^{-}$, and $As{O}_3^{3-}$
• C. $C{O}_3^{2-},S{O}_3^{2-}$ and $B{O}_3^{3-}$
• D. $As{O}_3^{3-},C{O}_3^{2-}$ and $S{O}_3^{2-}$

Answer 1

The correct option is B $S{O}_3^{2-},Cl{O}_3^{-}$, and $As{O}_3^{3-}$

Species	Hybridization	Geometry	Number of lone pairs
$N{O}_3^{-}$	$s{p}^2$	Trigonal planar	Zero
$As{O}_3^{3-}$	$s{p}^3$	Pyramidal	One
$C{O}_3^{2-}$	$s{p}^2$	Trigonal planar	Zero
$Cl{O}_3^{-}$	$s{p}^3$	Pyramidal	One
$S{O}_3^{2-}$	$s{p}^3$	Pyramidal	One
$B{O}_3^{3-}$	$s{p}^2$	Trigonal planar	Zero