The calculated spin only magnetic moment of \( \mathrm{Cr}^{2+} \) ion is: (a) \( 4.90 \mathrm{B...

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The calculated spin only magnetic moment of \( \mathrm{Cr}^{2+} \) ion is:
(a) \( 4.90 \mathrm{BM} \)
(b) \( 5.92 \mathrm{BM} \)
(NEET 2020)
\( P \)
(c) \( 2.84 \mathrm{BM} \)
(d) \( 3.87 \mathrm{BM} \)
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