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Classification of Elements and Periodicity in Properties — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryClassification of Elements and Periodicity in Properties1 Mark
Question
Why do noble gases have bigger atomic size than halogens?
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Answer

Noble gases have bigger atomic size than halogens because van der Waals radii are bigger than covalent radii and there is interelectronic repulsion in noble gases.

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