Question

The H-C-H, H-N-H, and H-O-H bond angles (in degrees) in methane, ammonia and water are respectively, closest to

• A. 109.5, 104.5, 107.1
• B. 109.5,107.1,104.5
• C. 104.5,107.1,104.5
• D. 107.1,104.5,109.5

Answer 1

The correct option is B 109.5,107.1,104.5


Bond angle ${109.5}^{\circ }$ ${107.1}^{\circ }$ ${104.5}^{\circ }$
Order of repulsions: lp – bp > bp – bp, hence greater the no. of lone pairs smaller the bond angle (If hybridization of central atom is same)