Chemistry NCERT Exemplar Solutions Class 12th Chapter Four Chemistry NCERT Exemplar Solutions Class 12th Chapter Twelve Class 12th Chemistry

The molecule in which hybrid MOs involve only one d-orbital of the central atom is :

Option 1 - <p><span class="mathml" contenteditable="false"> <math> <msub> <mrow> <mrow> <mi mathvariant="normal">X</mi> <mi mathvariant="normal">e</mi> <mi mathvariant="normal">F</mi> </mrow> </mrow> <mrow> <mrow> <mn>4</mn> </mrow> </mrow> </msub> </math> </span></p>

Option 2 - <p><span class="mathml" contenteditable="false"> <math> <msup> <mrow> <mrow> <mfenced open="[" close="]" separators="|"> <mrow> <mrow> <mi mathvariant="normal">N</mi> <mi mathvariant="normal">i</mi> <mo>(</mo> <mi mathvariant="normal">C</mi> <mi mathvariant="normal">N</mi> <msub> <mrow> <mrow> <mo>)</mo> </mrow> </mrow> <mrow> <mrow> <mn>4</mn> </mrow> </mrow> </msub> </mrow> </mrow> </mfenced> </mrow> </mrow> <mrow> <mrow> <mn>2</mn> <mo>-</mo> </mrow> </mrow> </msup> </math> </span></p>

Option 3 - <p><span class="mathml" contenteditable="false"> <math> <msup> <mrow> <mrow> <mfenced open="[" close="]" separators="|"> <mrow> <mrow> <msub> <mrow> <mrow> <mi mathvariant="normal">C</mi> <mi mathvariant="normal">r</mi> <mi mathvariant="normal">F</mi> </mrow> </mrow> <mrow> <mrow> <mn>6</mn> </mrow> </mrow> </msub> </mrow> </mrow> </mfenced> </mrow> </mrow> <mrow> <mrow> <mn>3</mn> <mo>-</mo> </mrow> </mrow> </msup> </math> </span></p>

Option 4 - <p><span class="mathml" contenteditable="false"> <math> <msub> <mrow> <mrow> <mi mathvariant="normal">B</mi> <mi mathvariant="normal">r</mi> <mi mathvariant="normal">F</mi> </mrow> </mrow> <mrow> <mrow> <mn>5</mn> </mrow> </mrow> </msub> </math> </span><strong> </strong>(Bonding)</p>

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Alok Kumar Singh | Contributor-Level 10

6 months ago

Correct Option - 1

Detailed Solution:

Sol. $U$ and $H$ are temperature dependent

$C_{P, m} - C_{V, m} = R$ (for 1 mole of ideal gas)

$d U = C_{V} d t$

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Chemistry NCERT Exemplar Solutions Class 12th Chapter Four 2025

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