JEE Mains · Chemistry · STD 12 - 4. d and f- block elements
Arrange the following elements in the increasing order of number of unpaired electrons in it. \((A)\) \(\mathrm{Sc}\) \((B) \mathrm{Cr}\) \((C) \mathrm{V}\) \((D)\) \(\mathrm{Ti}\) \((E)\) \(\mathrm{Mn}\) Choose the correct answer from the options given below:
- A \((C) < (E) < (B) < (A) < (D)\)
- B \((B) < (C) < (D) < (E) < (A)\)
- C \((A) < (D) < (C) < (B) < (E)\)
- D \(( A ) < (D) < (C) < (E) < (B)\)
Answer & Solution
Correct Answer
(D) \(( A ) < (D) < (C) < (E) < (B)\)
Step-by-step Solution
Detailed explanation
Unpaired electron \(\operatorname{Sc}[\mathrm{Ar}] 4 \mathrm{~s}^2 3 \mathrm{~d}^1 \ \ 1\) \(\mathrm{Cr}[\mathrm{Ar}] 4 \mathrm{~s}^1 3 \mathrm{~d}^5 \ \ 6\) \(\mathrm{~V}[\mathrm{Ar}] 4 \mathrm{~s}^2 3 \mathrm{~d}^3 \ \ 3\)…
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