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

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

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

Option 1 -

CuI

Option 2 -

$[C u {(N H_{3})}_{4}] C l_{2}$

Option 3 -

$O_{2}^{-}$

Option 4 -

$O_{2}^{+}$

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Answered by

Vishal Baghel | Contributor-Level 10

a month 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]

ln <math> <mrow> <mi>C</mi> <mi>u</mi> <mi>l</mi> <mo>, </mo> <mi>C</mi> <msup> <mrow> <mi>u</mi> </mrow> <mrow> <mo>+</mo> </mrow> </msup> <mtext> </mtext> <mtext> </mtext> <mi>h</mi> <mi>a</mi> <mi>s</mi> <mtext> </mtext> <mtext> </mtext> <mtext> </mtext> <mn>3</mn> <msup> <mrow> <mi>d</mi> </mrow> <mrow> <mn>1</mn> <mn>0</mn> </mrow> </msup> <mn>4</mn> <msup> <mrow> <mi>s</mi> </mrow> <mrow> <mn>0</mn> </mrow> </msup> <mo>, </mo> <mrow> <mo> [</mo> <mrow> <mi>n</mi> <mo>=</mo> <mn>0</mn> <mtext> </mtext> <mtext> </mtext> <mi>a</mi> <mi>n</mi> <mi>d</mi> <mtext> </mtext> <mtext> </mtext> <mi>μ</mi> <mo>=</mo> <mn>0</mn> <mi>B</mi> <mi>M</mi> </mrow> <mo>]</mo> </mrow> </mrow> </math> <!- [if gte mso 9]><xml> <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1025" DrawAspect="Content" ObjectID="_1816160449"> </o:OLEObject></xml><! [endif]->ln   <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> <mo>, </mo> <mi>C</mi> <msup> <mrow> <mi>u</mi> </mrow> <mrow> <mo>+</mo> <mo>+</mo> </mrow> </msup> <mi>h</mi> <mi>a</mi> <mi>s</mi> <mtext> </mtext> <mtext> </mtext> <mtext> </mtext> <mn>3</mn> <msup> <mrow> <mi>d</mi> </mrow> <mrow> <mn>9</mn> </mrow> </msup> <mn>4</mn> <msup> <mrow> <mi>s</mi> </mrow> <mrow> <mn>0</mn> </mrow> </msup> <mrow> <mo> [</mo> <mrow> <mi>n</mi> <mo>=</mo> <mn>1</mn> <mtext> </mtext> <mtext> </mtext> <mi>a</mi> <mi>n</mi> <mi>d</mi> <mtext> </mtext> <mtext> </mtext> <mi>μ</mi> <mo>=</mo> <mn>1</mn> <mo>.</mo> <mn>7</mn> <mn>3</mn> <mtext> </mtext> <mtext> </mtext> <mi>B</mi> <mi>M</mi> </mrow> <mo>]</mo> </mrow> </mrow> </math> <!- [if gte mso 9]><xml> <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1026" DrawAspect="Content" ObjectID="_1816160450"> </o:OLEObject></xml><! [endif]-> <math> <mrow> <mi>l</mi> <mi>n</mi> <mtext> </mtext> <mtext> </mtext> <msubsup> <mrow> <mi>O</mi> </mrow> <mrow> <mn>2</mn> </mrow> <mrow> <mo>−</mo> </mrow> </msubsup> <mo>&</mo> <msup> <mrow> <msub> <mrow> <mi>O</mi> </mrow> <mrow> <mn>2</mn> </mrow> </msub> </mrow> <mrow> <mo>+</mo> </mrow> </msup> </mrow> </math> only one electron is unpaired in anti bonding MO, Hence [n = 1 and <math> <mrow> <mi>μ</mi> </mrow> </math> <!- [if gte mso 9]><xml> <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1028" DrawAspect="Content" ObjectID="_1816160452"> </o:OLEObject></xml><! [endif]->= 1.73 BM]

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

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