Chemistry - CHEMICAL BONDING Question with Solution | TestHub

The correct statements are (B) and (D).

A) Incorrect: CO₂ exhibits resonance between structures like O=C=O and O⁺≡C–O⁻.

B) Correct: In the cyclic trimer $[B_3{O}_6{]}^{3-}$, all 3 Boron and 6 Oxygen atoms lie in a single plane, totaling 9 atoms.

C) Incorrect: In CCl₃⁻, back-bonding occurs as the lone pair on Carbon is donated into the empty 3d-orbitals of Chlorine.

D) Correct: ICl₂⁻ has a linear geometry (planar) and is symmetrical, making it a non-polar ion with a net dipole moment of zero.