Discuss the shape of the `B Cl_(3)` molecules using VSEPR model .

Explanation

`BCl_(3)`: In this molecule, B is the central atom `(1s^(2), 2s^(2), 2p^(1))`. It has three valence electrons. Thus, it has only three bond pairs and no lone pairs. It shares its 3 valence electrons with each of the three chlorine atoms, thus molecule acquires a trigonal planar shape. It has boron at the centre and the three chlorine atoms at three corners of a triangle. The Cl-B -Cl bond angle is `120^(@)`