Magnetic moment 2.84 B.M. is given by (At. nos. Ni = 28, Ti = 22, Cr = 24, Co = 27) [2015]

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Solution

Q.
Magnetic moment 2.84 B.M. is given by (At. nos. Ni = 28, Ti = 22, Cr = 24, Co = 27) [2015]

1 ${Cr}^{2 +}$

2 ${Co}^{2 +}$

3 ${Ni}^{2 +}$

4 ${Ti}^{3 +}$

Ans.
(3)

Magnetic moment $(μ) = \sqrt{n (n + 2)}$

2.84 B.M. corresponds to 2 unpaired electrons.

${Cr}^{2 +} : 3 d^{4}$ , 4 unpaired electrons

${Co}^{2 +} : 3 d^{7}$ , 3 unpaired electrons

${Ni}^{2 +} : 3 d^{8}$ , 2 unpaired electrons

${Ti}^{3 +} : 3 d^{1}$ , 1 unpaired electron

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