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प्रश्न
The paramagnetism of lanthanoids is due to both ______ and ______.
रिक्त स्थान भरें
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उत्तर
The paramagnetism of lanthanoids is due to both electron spin and orbital motion.
Explanation:
Unpaired 4f electrons give a magnetic moment by their spin, and because 4f orbitals are deeply shielded, the electrons also retain a strong orbital contribution. Together, these spin and orbital effects determine the lanthanoid magnetic behaviour, so the moment doesn’t depend only on the number of unpaired electrons.
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