Arrange the following elements in the increasing order of number of unpaired electrons in it. (A) Sc (B) Cr (C) V (D) Ti (E) Mn Choose the correct answer from the options given below :

Correct answer: (C) (A) < (D) < (C) < (E) < (B). Unpaired electron Sc[Ar] 4 ~s^2 3 ~d^1 1 Cr[Ar] 4 ~s^1 3 ~d^5 6 V[Ar] 4 ~s^2 3 ~d^3 3 Ti:[Ar] 4 ~s^2 3 ~d^2 2 Mn:[Ar] 4 ~s^2 3 ~d^5 5

Q12 / 90 · JEE Main 2024 (06 Apr Shift 2) · Chemistry

Arrange the following elements in the increasing order of number of unpaired electrons in it. (A) $\mathrm{Sc}$ (B) $\mathrm{Cr}$ (C) $\mathrm{V}$ (D) $\mathrm{Ti}$ (E) Mn Choose the correct answer from the options given below :

A
$(\mathrm{A}) < (\mathrm{D}) < (\mathrm{C}) < (\mathrm{B}) < (\mathrm{E})$
B
$(\mathrm{C}) < (\mathrm{E}) < (\mathrm{B}) < (\mathrm{A}) < (\mathrm{D})$
Correct answer
C
$(\mathrm{A}) < (\mathrm{D}) < (\mathrm{C}) < (\mathrm{E}) < (\mathrm{B})$
D
$\text { (B) } < \text { (C) } < \text { (D) } < \text { (E) } < \text { (A) }$

Solution

$\begin{array}{ll} \text{Unpaired electron} \\ \operatorname{Sc}[\mathrm{Ar}] 4 \mathrm{~s}^2 3 \mathrm{~d}^1 & 1 \\ \mathrm{Cr}[\mathrm{Ar}] 4 \mathrm{~s}^1 3 \mathrm{~d}^5 & 6 \\ \mathrm{V}[\mathrm{Ar}] 4 \mathrm{~s}^2 3 \mathrm{~d}^3 & 3 \\ \mathrm{Ti}:[\mathrm{Ar}] 4 \mathrm{~s}^2 3 \mathrm{~d}^2 & 2 \\ \mathrm{Mn}:[\mathrm{Ar}] 4 \mathrm{~s}^2 3 \mathrm{~d}^5 & 5 \end{array}$

Hence, the correct answer is option: 'C'.

Arrange the following elements in the increasing order of number of unpaired electrons in it. (A) \(\mathrm{Sc}\) (B) \(\mathrm{Cr}\) (C) \(\mathrm{V}\) (D) \(\mathrm{Ti}\) (E) Mn Choose the correct answer from the options given below :

Solution

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