Question

Which of the following metallic ions have the same magnetic moment?

• A. $C{r}^{3+}$
• B. $M{n}^{2+}$
• C. $C{r}^{2+}$
• D. $C{o}^{2+}$
  

Answer 1

Answer: (A), (D)

$C{o}^{2+}$


$C{r}^{3+}$ has 3 unpaired electrons,
Magnetic moment = 3.87 BM.
$M{n}^{2+}$ has 5 unpaired electrons,
Magnetic moment = 5.91 BM.
$C{r}^{2+}$ has 4 unpaired electrons,
Magnetic moment = 4.89 BM.
$C{o}^{2+}$ has 3 unpaired electrons,
Magnetic moment = 3.87 BM.