Question

The magnetic moment is associated with its spin angular momentum and orbital angular momentum. Spin only magnetic moment value of $Cr^{3 +}$ion is

• A. $2.87B.M.$
• B. $3.87B.M.$
• C. $3.47B.M.$
• D. $3.57B.M.$

Answer 1

Answer: (B)

$3.87B.M.$

Answer 2

$Cr(24):3d^{5}4s^{1}$

$Cr^{3 +};3d^{3}$

$\mu = \sqrt{n(n + 2)} = \sqrt{3(3 + 2)} = \sqrt{15} = 3.87B.M.$