MHT CET202611 April 2026Morning ShiftChemistryd and f Block ElementsActual
Identify the set of paramagnetic ions among the following.
Options
- AV ⁺², Co ⁺², Ti ⁺⁴
- BNi ⁺², Cu ⁺², Zn ⁺²
- CTi ⁺², Cu ⁺², Mn ⁺³
- DSc ⁺³, Ti ⁺³, V ⁺³
Correct answer
C. Ti ⁺², Cu ⁺², Mn ⁺³
Step-by-step solution
Paramagnetic ions are those that contain at least one unpaired electron in their electronic configuration. Writing the outer electronic configurations of the given ions: V ⁺² : [ Ar ] 3d³ (3 unpaired electrons, paramagnetic) Co ⁺² : [ Ar ] 3d⁷ (3 unpaired electrons, paramagnetic) Ti ⁺⁴ : [ Ar ] 3d⁰ (0 unpaired electrons, diamagnetic) Ni ⁺² : [ Ar ] 3d⁸ (2 unpaired electrons, paramagnetic) Cu ⁺² : [ Ar ] 3d⁹ (1 unpaired electron, paramagnetic) Zn ⁺² : [ Ar ] 3d¹⁰ (0 unpaired electrons, diamagnetic) Ti ⁺² : [ Ar ] 3d