Block D and F Elements Class 12th Chemistry Ncert Solutions Chemistry Class 12th

In which of the following pairs, the outer most electronic configuration will be the same?

Option 1 - <p><span class="mathml" contenteditable="false"> <math> <mrow> <mi>C</mi> <msup> <mrow> <mi>r</mi> </mrow> <mrow> <mo>+</mo> </mrow> </msup> <mi>a</mi> <mi>n</mi> <mi>d</mi> <mtext> </mtext> <mtext> </mtext> <mi>M</mi> <msup> <mrow> <mi>n</mi> </mrow> <mrow> <mn>2</mn> <mo>+</mo> </mrow> </msup> </mrow> </math> </span></p>

Option 2 - <p>Ni<sup>2+</sup> and Cu<sup>+</sup></p>

Option 3 - <p>Fe<sup>2+</sup> and Co<sup>+</sup></p>

Option 4 - <p>V<sup>2+</sup> and Cr<sup>+</sup></p>

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Answered by

Alok Kumar Singh | Contributor-Level 10

6 months ago

Correct Option - 1

Detailed Solution:

(1) $C r^{+ 1} = 4 s^{0} 3 d^{5} M n^{+ 2} = 4 s^{0} 3 d^{5}$

(2) $N i^{+ 2} = 4 s^{0} 3 d^{8} C u^{+} = 4 s^{0} 3 d^{10}$

(3) $F e^{+ 2} = 4 s^{0} 3 d^{6} C o^{+} = 4 s^{1} 3 d^{7}$

(4) $V^{+ 2} = 4 s^{0} 3 d^{3} C r^{+} = 4 s^{o} 3 d^{5}$

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Chemistry Ncert Solutions Class 12th 2023

Chemistry Ncert Solutions Class 12th 2023

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