The shape of the molecule having formula ab2 has been linear or trigonal planar. Hence, the correct option will be e) linear or trigonal planar
The hybridization is been given as the combining of the valence shells with the formation of the given hybridized shell which have equal energy distribution.
The molecule that has A as a central atom, and B bonded to the fixed central atom. The molecular hybridization of the given molecule will be sp hybridization and that accounts for the linear shape of the molecule according to VSEPR theory.
Hybridization of A having the lone pair, and the shape of the molecule will be trigonal planar.
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