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JEE Main Chemistry question

ChemistryThe p-Block ElementsJEE Main

How many of the following trends are CORRECT for group 17 elements? 1. (covalent radius) 2. (bond dissociation enthalpy) 3. (reduction potential values) 4. (density)

Answer: 4

Solution

(1) Covalent/atomic radius genuinely increases down the group — CORRECT. (2) Bond dissociation enthalpies are (159), (242, highest), (193), (151 kJ/mol); this matches exactly the pattern , then — CORRECT (the anomalously weak F–F bond, reflecting

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Question ID VK-147122