Answer: E. trigonal planar
Explanation:
According to VSEPR theory:
[tex]:{\text{Number of electrons}} =\frac{1}{2}[V+N-C+A][/tex]
where, V = number of valence electrons present in central atom i.e. carbon = 4
N = number of monovalent atoms bonded to central atom=3
C = charge of cation = 0
A = charge of anion = -1
If a central atom is bound to three other atoms with no lone pairs of electrons,the number of electrons is 3 that means the hybridization will be [tex]sp^2[/tex] and the electronic geometry of the molecule will be trigonal planar as the electron pairs will repel each other and attain a position which is most stable.
