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Chemistry · Chemical Bonding

JEE Main 2026 — 21 January, Evening Shift — Question 62

Given below are two statements : one is labelled as Statement I and the other is labelled as Statement II :

Statement I: The correct order in terms of bond dissociation enthalpy is Cl2>Br2>F2>I2\mathrm{Cl}_{2}>\mathrm{Br}_{2}>\mathrm{F}_{2}>\mathrm{I}_{2}

Statement II : The correct trend in the covalent character of the metal halides is [SnCl4>SnCl2]\left[\mathrm{SnCl}_{4}>\mathrm{SnCl}_{2}\right], [PbCl4>PbCl2]\left[\mathrm{PbCl}_{4}>\mathrm{PbCl}_{2}\right] and [UF4>UF6]\left[\mathrm{UF}_{4}>\mathrm{UF}_{6}\right]

In the light of the above statements, choose the correct answer from the options given below :

  1. Option A:

    Statement I is true but Statement II is false

  2. Option B:

    Both Statement I and Statement II are true

  3. Option C:

    Statement I is false but Statement II is true

    Correct
  4. Option D:

    Both Statement I and Statement II are false

Answer: C

Step-by-step solution

Statement-I : Bond energy order is Cl2>Br2>F2>I2\mathrm{Cl}_{2}>\mathrm{Br}_{2}>\mathrm{F}_{2}>\mathrm{I}_{2} Bond energy increases with increase in bond order. Statement-II Correct order of covalent character According to the Fajan's rule, higher the charge on cation, greater is the covalent character. PbCl2<PbCl4\mathrm{PbCl}_{2}<\mathrm{PbCl}_{4}, UF6>UF4\mathrm{UF}_{6}>\mathrm{UF}_{4}, SnCl4>SnCl2\mathrm{SnCl}_{4}>\mathrm{SnCl}_{2}

Answer key and solution verified before publishing.

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Exam
JEE Main 2026
Paper
21 January, Evening Shift
Subject
Chemistry
Chapter
Chemical Bonding
Topic
Dipole Moment and Fajans' Rule

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