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Karnataka Board PUCPUC Science 2nd PUC Class 12

Properties of Solids: Magnetic Properties

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Estimated time: 4 minutes
Maharashtra State Board: Class 12

Key Points: Magnetic Properties of Solids

Motion of electrons generates a magnetic field — each electron behaves like a tiny bar magnet with a magnetic moment measured in Bohr Magneton (μ_B) = 9.27 × 10⁻²⁴ A m².

Type Nature Electron Configuration Examples
Diamagnetic Weakly repelled by magnetic field; magnetised in opposite direction All electrons paired NaCl, H₂O, N₂, C₆H₆, F₂, benzene
Paramagnetic Weakly attracted by magnetic field; magnetised in same direction Unpaired electrons; lose magnetism when field removed O₂, Cu²⁺, Fe³⁺, Cr³⁺
Ferromagnetic Strongly attracted; can be permanently magnetised (all domains align in field direction) Unpaired electrons + aligned domains Fe, Co, Ni, Gd, CrO₂

Shaalaa.com | Solid States part 24 (Magnetic Properties)

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Solid States part 24 (Magnetic Properties) [00:11:25]
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