MHTCET 16 May 2024 Shift 1 Paper

Concept:In $\mathrm{SO}_2$, the central sulfur atom has three electron pairs around it, giving a bent molecular shape.Explanation:$\mathrm{SO}_2$ contains one sulfur atom bonded to two oxygen atoms.Sulfur has six valence electrons; one lone pair remains on sulfur after forming two double bonds.Thus, the steric number is $3$ (two bond pairs + one lone pair), giving a trigonal planar electron-pair geometry.Because one position is occupied by a lone pair, the molecular shape is bent or V-shaped.The lone pair repels the bonding pairs, compressing the bond angle from the ideal $120^\circ$ to approximately $119.5^\circ$.Answer:$\mathrm{O}-\mathrm{S}-\mathrm{O}$ angle in $\mathrm{SO}_2$ is $\boxed{119.5^\circ}$.Correct option: A.