The correct order of bond...|Chemical Bonding|JEE-Main 2021

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JEE MAIN 2021

25-02-2021 S2

Question

The correct order of bond dissociation enthalpy of halogens is :

Select the correct option:

$\mathrm{Cl}_2>\mathrm{F}_2>\mathrm{Br}_2>\mathrm{I}_2$

$\mathrm{I}_2>\mathrm{Br}_2>\mathrm{Cl}_2>\mathrm{F}_2$

$\mathrm{Cl}_2>\mathrm{Br}_2>\mathrm{F}_2>\mathrm{I}_2$

$\mathrm{F}_2>\mathrm{Cl}_2>\mathrm{Br}_2>\mathrm{I}_2$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

Correct order of bond dissociation enthalpy of halogens is $\mathrm{Cl}_2>\mathrm{Br}_2>\mathrm{F}_2>\mathrm{I}_2$. Due to inter electronic repulsions $\mathrm{F}-\mathrm{F}$ bond becomes weak and easily broken.

Question Tags

JEE Main

Chemistry

Easy

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