Question

Match list I with list II and select the correct answer using the codes given below the lists.

List I Metal ion		List II Magnetic moment(BM)
A.	Cr3+	1.	$\sqrt{35}$
B.	Fe2+	2.	$\sqrt{30}$
C.	Ni2+	3.	$\sqrt{24}$
D.	Mn2+	4.	$\sqrt{15}$
		5.	$\sqrt{8}$

Codes

• A. A-l, B-3, C-5, D-4
• B. A-2, B-3, C-5, D-1
• C. A-4, B-3, C-5, D-1
• D. A-4, B-5, C-3, D-1

Answer 1

Answer: (C)

For $C{r}^{3+}=3d^3,\mu =\sqrt{3\left(3+2\right)}=\sqrt{15}$B.M.
For $F{e}^{2+}=3d^6,\mu =\sqrt{4\left(4+2\right)}=\sqrt{24}$ B.M.
For $N{i}^{2+}=3d^8,\mu =\sqrt{2\left(2+2\right)}=\sqrt{8}$ B.M.
For $M{n}^{2+}=3d^5,\mu =\sqrt{5\left(5+2\right)}=\sqrt{35}$B.M.