First slide

Electronic configuration and Atomic , physical properties

Question

Arrange the halogens $F_{2}, {Cl}_{2}, {Br}_{2}, I_{2}$ in order of their increasing reactivity with alkanes

Easy

A

$I_{2} < {Br}_{2} < {Cl}_{2} < F_{2}$
B

${Br}_{2} < {Cl}_{2} < F_{2} < I_{2}$
C

$F_{2} < {Cl}_{2} < {Br}_{2} < I_{2}$
D

${Br}_{2} < I_{2} < {Cl}_{2} < F_{2}$

Solution

Reaction of F₂ is so fast with alkanes that the heat produced in the reaction causes explosion. The reaction of I₂ with alkane is reversible in nature and requires some oxidising agent like HgO, HIO₃ etc., to consume the HI produced and forward reaction is carried out.
${CH}_{4} + I_{2} ⇌ {CH}_{3} I + HI$
${HIO}_{3} + 5 HI ⟶ 3 I_{2} + 3 H_{2} O$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App