Chemistry NCERT Exemplar Solutions Class 11th Chapter One Block D and F Elements Class 12th Chemistry Ncert Solutions Chemistry Class 12th

Which one of the following species doesn't have a magnetic moment of 1.73BM. (spin only value)?

Option 1 - <p>CuI</p>

Option 2 - <p><span class="mathml" contenteditable="false"> <math> <mrow> <mrow> <mo>[</mo> <mrow> <mi>C</mi> <mi>u</mi> <msub> <mrow> <mrow> <mo>(</mo> <mrow> <mi>N</mi> <msub> <mrow> <mi>H</mi> </mrow> <mrow> <mn>3</mn> </mrow> </msub> </mrow> <mo>)</mo> </mrow> </mrow> <mrow> <mn>4</mn> </mrow> </msub> </mrow> <mo>]</mo> </mrow> <mi>C</mi> <msub> <mrow> <mi>l</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> </mrow> </math> </span></p>

Option 3 - <p><span class="mathml" contenteditable="false"> <math> <mrow> <msubsup> <mrow> <mi>O</mi> </mrow> <mrow> <mn>2</mn> </mrow> <mrow> <mo>−</mo> </mrow> </msubsup> </mrow> </math> </span></p>

Option 4 - <p><span class="mathml" contenteditable="false"> <math> <mrow> <msubsup> <mrow> <mi>O</mi> </mrow> <mrow> <mn>2</mn> </mrow> <mrow> <mo>+</mo> </mrow> </msubsup> </mrow> </math> </span></p>

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Vishal Baghel | Contributor-Level 10

6 months ago

Correct Option - 1

Detailed Solution:

ln $C u l, C u^{+} h a s 3 d^{10} 4 s^{0}, [n = 0 a n d μ = 0 B M]$

ln $[C u {(N H_{3})}_{4}] C l_{2}, C u^{+ +} h a s 3 d^{9} 4 s^{0} [n = 1 a n d μ = 1.73 B M]$

$l n O_{2}^{-} & {O_{2}}^{+}$ only one electron is unpaired in anti bonding MO,

Hence [n = 1 and $μ$ = 1.73 BM]

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Chemistry NCERT Exemplar Solutions Class 11th Chapter One 2025

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