Which halogen is most reactive?

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Multiple Choice

Which halogen is most reactive?

Explanation:
Reactivity in halogens is about how easily an atom can attract and gain an electron to form a halide ion. Fluorine does this most readily because it is the smallest halogen with a very strong attraction for electrons. This means it acts as a powerful oxidizing agent and forms F− quickly. As you go down the group, atoms get larger and more shielded, so their ability to attract an extra electron weakens, making them less reactive. So fluorine stands out as the most reactive halogen.

Reactivity in halogens is about how easily an atom can attract and gain an electron to form a halide ion. Fluorine does this most readily because it is the smallest halogen with a very strong attraction for electrons. This means it acts as a powerful oxidizing agent and forms F− quickly. As you go down the group, atoms get larger and more shielded, so their ability to attract an extra electron weakens, making them less reactive. So fluorine stands out as the most reactive halogen.

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