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The high reactivity of halogens is due to their ______ dissociation energy and ______ electron affinity.

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Question

The high reactivity of halogens is due to their ______ dissociation energy and ______ electron affinity.

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Solution

The high reactivity of halogens is due to their low dissociation energy and high electron affinity.

Explanation:

Halogens are highly reactive because they have low bond dissociation energy, which makes their X-X bonds easy to break, and they also have high negative electron gain enthalpy, giving them a strong tendency to gain electrons quickly.

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