The metal ions that have the calculated spin only magnetic moment value of 4.9 B.M. are
A. \({\mathrm{Cr}}^{2+}\)
B. \({\mathrm{Fe}}^{2+}\)
C. \({\mathrm{Fe}}^{3+}\)
D. \({\mathrm{Co}}^{2+}\)
E. \({\mathrm{Mn}}^{3+}\)
Choose the correct answer from the options given below

[JEE Main 2025, 3 Apr (Shift 1)]

Question

The metal ions that have the calculated spin only magnetic moment value of 4.9 B.M. are
A. \({\mathrm{Cr}}^{2+}\)
B. \({\mathrm{Fe}}^{2+}\)
C. \({\mathrm{Fe}}^{3+}\)
D. \({\mathrm{Co}}^{2+}\)
E. \({\mathrm{Mn}}^{3+}\)
Choose the correct answer from the options given below

[JEE Main 2025, 3 Apr (Shift 1)]

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The metal ions that have the calculated spin only magnetic moment value of 4.9 B.M. are A. \({\mathrm{Cr}}^{2+}\) B. \({…

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