Reactivity (halogens): The very high chemical reactivity of fluorine is mainly due to what factor? Consider periodic trends and bond energetics. Choose the best reason.
IIT JEE
Chemistry
Difficulty: Easy
Choose an option
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AIts high electronegativity
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BSmall size of fluorine atom
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CAvailability of d-orbitals
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DStrong F–F bond
Answer
Correct Answer: Its high electronegativity
Explanation
Concept/ApproachFluorine has the highest electronegativity and very high electron affinity, driving strong oxidizing power. Its small size also contributes, but the principal textbook reason cited is electronegativity. Options (c) and (d) are incorrect: fluorine lacks accessible d-orbitals and the F–F bond is relatively weak, not strong.
Final AnswerIts high electronegativity