SSC MTS EXAM

Detailed explanation-1: -BCl3 has trigonal planar structure due to 3 bond pairs in the valence shell of boron where as NCl3 has distorted tetrahedral structure (i.e., pyramidal structure) due to one lone pair and three bond pairs in the valence shell of nitrogen.

Detailed explanation-2: -To be more precise, the BF3 molecular geometry is trigonal planar. It further has symmetric charge distribution on the central atom and is nonpolar. The bond angle is 120o where all the atoms are in one plane. Each of them also makes an equilateral triangle.

Detailed explanation-3: -Here for the BCl3 molecule there 3 B-Cl bonds which are equidistant and have a bond angle of 1200. So the electron pair geometry and molecular geometry of boron trichloride are trigonal planar and trigonal planar respectively.