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Which of the following complexes exhibits the highest paramagnetic behaviour?

1. [V(gly)₂(OH)(NH₃)₂]⁺
2. [Fe(en)(bpy)(NH₃)₂]²⁺
3. [Co(O₂)(OH)₂]
4. [Ti(NH₃)₆]³⁺

Correct answer: [V(gly)₂(OH)(NH₃)₂]⁺

Solution

[V(gly)₂(OH)(NH₃)₂]⁺ has a d¹ configuration, which exhibits the highest paramagnetic behavior due to the presence of one unpaired electron.

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