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D and F Block Elements question

2024 · Q122
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D and F Block Elements question

2024 · Q122

NEETChemistryD and F Block ElementsMCQ+4 / −1

'Spin only' magnetic moment is same for which of the following ions?

A. Ti3+\mathrm{Ti}^{3+}Ti3+

B. Cr2+\mathrm{Cr}^{2+}Cr2+

C. Mn2+\mathrm{Mn}^{2+}Mn2+

D. Fe2+\mathrm{Fe}^{2+}Fe2+

E. Sc3+\mathrm{Sc}^{3+}Sc3+

Choose the most appropriate answer from the options given below.

  1. A
    B and D only
  2. B
    A and E only
  3. C
    B and C only
  4. D
    A and D only
View written solutionFree

Correct answer: A

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IonsNo. of unpaired electronsConfiguration
Ti$^{3+}$13d$^1$
$$
\mathrm{Cr}^{2+}
$$		4$
3 d^4
$
$$
\mathrm{Mn}^{2+}
$$		5$
3 d^5
$
$$
\mathrm{Fe}^{2+}
$$		4$
3 d^6
$
$$
\mathrm{Sc}^{3+}
$$		0$
3 d^0
$

Spin only magnetic moment is given by $$\sqrt{n(n+2)} \mathrm{BM}$$

$$\therefore \mathrm{Cr}^{2+}$$ and $\mathrm{Fe}^{2+}$ will have same spin only magnetic moment.

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