Question

Which of the following ions has a trigonal planar shape ?

• A. $S{O}_3^{2-}$
• B. $P{O}_4^{3-}$
• C. $C{N}^{-}$
• D. $C{O}_3^{2-}$

Answer 1

The correct option is D $C{O}_3^{2-}$

(A) ${SO}_3^{2-}$ has a trigonal pyramidal geometry with 107 Bond angle.

(B)${PO}_4^{3-}$ has Tetrahedral geometry with 109.5 degree Bond angle.

(C) ${CN}^{-}$ has linear geometry with a 180 degree Bond angle.

(D)${CO}_3^{2-}$ has trigonal Planar geometry with 120 degree Bond angle.

Hence the correct option is D.