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Class XII
Unpaired d-electrons rule transition metal magnetism! āļø More unpaired eā» means stronger attraction (paramagnetism) š§². No unpaired eā»? It's diamagnetic and repelled
ClassXII
Why do transition metals have so many oxidation states? It's because the energy gap between their ns and (n-1)d orbitals is tiny! š¤ Electrons from both can join the bonding party. šāļø