Chemistry - CHEMICAL BONDING Question with Solution | TestHub

(A) True: HClO₄ > HClO₃ > HClO₂ > HClO because more O atoms increase the $-I$ effect and hence acidic strength.

(B) True: PH₃ > AsH₃ > SbH₃; down the group, hybridization decreases and the bond angle approaches $90^{\circ }$.

(C) False: The given bond-length order is incorrect; bond length depends on bond order and resonance.

(D) True: BF₃ > BCl₃ > BBr₃ because the electronegativity difference between B and X decreases down the group.

Correct options: A, B, D