KCET 2025 Chemistry Paper

The correct answer is Option D: Ambidentate ligand.
• An ambidentate ligand has two (or more) different donor atoms but binds through only one donor site at a time.
• Classic examples include SCN⁻ (thiocyanate, which can bind through S or N) and NO₂⁻ (nitrite, which can bind through N or O).