The expression for effective magnetic moment \( \left(\mu_{\text {eff. }}\right) \) is: (a) \( \...

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The expression for effective magnetic moment \( \left(\mu_{\text {eff. }}\right) \) is:
(a) \( \mu_{\text {eff. }}=\sqrt{n(n+2)} \) B.M.
(b) \( \mu_{\text {eff. }}=\sqrt{2(n+2)} \) B.M.
[AMU (Med.) 2013]
(c) \( \mu_{\text {eff. }}=\sqrt{n(2 n+2)} \) B.M.
(d) \( \mu_{\text {eff. }}=\sqrt{n(n+1)} \) B.M.
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