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Iron is ferromagnetic in nature. Explain...

Iron is ferromagnetic in nature. Explain why.

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Ferromagnetic substances have unpaired electrons and are attracted strongly in a magnetic field. `Fe_(26) has 4s^(2)3d^6` valence shell configuration with four unpaired electrons in 3d. So it is ferromagnetic when all these four unpaired electrons get aligned in the same direction in a given magnetic field. `Fe_(26)` atom.s valence shell
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