Why is chromium paramagnetic in nature ?
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Electrons spin, which generates a small magnetic field. Each orbital within an atom can only hold a maximum of two electrons, and these two electrons (or paired electrons) will have opposite spins. ... If an orbital contains any unpaired electrons, it's paramagnetic (and will be attracted by an external magnetic field).
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Chromium in [Cr(NH3)6]3+ is in +3 oxidation state and has electronic configuration of [Ar]3d54s1. Cr3+ ion provides six empty orbitals to accommodate six pairs of electrons from six molecules of ammonia. ... Due to the presence of these unpaired electrons in the complex it is paramagnetic in nature.
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