Chemistry - CHEMICAL BONDING Question with Solution | TestHub

Question Explanation : Identify the correct bond angle order.

Concept: Lone pair repulsion and hybridisation effect.

Solution:

• NH₃ (107°) has stronger lone pair–bond pair repulsion than NF₃ (~102°) because F is highly electronegative and pulls bond pairs away.

• H₂O (104.5°) has two lone pairs, so its angle is less than NH₃, not greater.

• PH₃ (93.5°) has much smaller bond angle than NH₃ due to poor hybridisation.

• H₂O (104.5°) has larger bond angle than H₂S (~92°) since oxygen is smaller and more electronegative. Thus, only NF₃ < NH₃ is correct.

Final Answer: Option (A)