Question Detail

CHM 102 Practice Questions Objective Question
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Question

Which halogen does not appreciably react with methane in a free-radical substitution reaction?
Options
A chlorine
B bromine
C iodine
Correct Answer
D fluorine
Correct Answer

Option C is the correct answer.

Detailed Explanation

Iodine does not appreciably react with methane in free-radical substitution because the reaction is thermodynamically unfavorable (endothermic). The I-I bond is weak, but the H-I bond formed is also weak, making the overall reaction not favorable.

Hint

Which halogen has the weakest H-X bond formed?

Question Info

Course: CHM 102
Topic: Practice Questions
Type: Objective
Difficulty: Not specified
Question 1059 of 1999
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