Question

Why are solids containing f centres paramagnetic?

Answer 1

Explanation:

$the \: anionic \: vacancies \ \\ that \: are \: occupied \: by \: the \\ unpaired \: electrons \: are \: called \\ f \: centres. \\ when\: the \: electrons \: are \: unpaired \\ there \: will \: be \: a \: presence \: of \\ paramagnetism. \\ hence \: f \: centres \: are \: paramagnetic$

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