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Question

Consider the reaction,


H2+X22HX, where X is halogen.

The reactivity of halogens decrease in the order of:

A
Cl2>F2>Br2>I2
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B
I2>Br2>F2>Cl2
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C
F2>Cl2>Br2>I2
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D
I2>Br2>Cl2>F2
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Solution

The correct option is C F2>Cl2>Br2>I2
HH+XX2HX, where X= halogen.

The hydrogen-halogen reactions get gradually less reactive toward the heavier halogens.

The correct decreasing order of reactivity of halogen molecule towards H2 is F2>Cl2>Br2>I2.

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