See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

Species with at least one or more unpaired electron(s) are attracted by the magnetic field and is said to be paramagnetic 2 2 2 Na ,Zn Cu and O     No unpaired electron hence, diamagnetic 2 O  Two unpaired electrons, in anti-bonding molecular orbitals 2 Fe Four unpaired electrons in 3d-orbital 3 Cr Three unpaired electrons in 3d-orbital CuOne unpaired electron in 3d-orbital 2 OOne unpaired electron in anti-bonding molecular orbitals