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प्रश्न
Which of the following halogens has the least affinity towards hydrogen?
विकल्प
F2
Cl2
Br2
I2
MCQ
उत्तर
I2
Explanation:
Iodine has the least affinity for hydrogen of all the halogens. A catalyst is required for the reaction of iodine with hydrogen.
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Chemical Properties of Elements of Groups 16, 17 and 18
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