Question

Which of following ion has the maximum theoretical magnetic moment?

• A. $C{r}^{3+}$
• B. $F{e}^{3+}$
• C. $T{i}^{3+}$
• D. $C{o}^{3+}$

Answer 1

Answer: (B)

$F{e}^{3+}$

$F{e}^{3+}$
n=5 (unparied electrons)
$\therefore \mu =\sqrt{n(n+2)}BM$
$=\sqrt{5(5+2)}$
$=\sqrt{35}=5.91BM$