The species, having bond angles of $120^{\circ }$ is:

- ${\text{BCl}}_3$: Boron has 3 valence electrons, forms 3 bond pairs with $Cl$, $s{p}^2$ hybridized, Trigonal planar geometry. Bond angle is exactly $120^{\circ }$.${\text{ClF}}_3$: T-shaped, bond angles $<90^{\circ }$.${\text{NCl}}_3$ and ${\text{PH}}_3$: Pyramidal, bond angles $<109.5^{\circ }$ (approx $107^{\circ }$ and $93^{\circ }$ respectively).