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Answer» On the basis of the magnetic properties solids can be classified as follows: | Properties | Description | Alignment of magnetic dipoles | Examples | Application | | Diamagnetic | They are weakly repelled by the magnetic fields | All the electrons in the orbitals are paired and are completely filled. | NaCl, Benzene | Behaves like an insulator. | | Paramagnetic | They are weakly attracted by the magnetic fields. | Contains at least one unpaired electron in the orbital. | O2, Cu2+ etc. | Electronic appliances | | Ferromagnetic | Strongly attracted by the magnetic field. It can be magnetized permanently | Consists of unpaired electrons, all having the same direction | Cobalt, nickel, CrO2 etc. | CrO2 is commonly used in making cassette recorder. | | Antiferromagnetic | Net magnetic moment is zero. | Dipole moments are arranged in a compensatory way | NiO, MnO, V2O3 etc. | – | | Ferrimagnetic | Possess small net magnetic moments | Unequal number of parallel and antiparallel arrangement of magnetic moments | Fe3O4 | – |
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