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प्रश्न
Give reason.
Noble gases possess relatively large atomic size.
उत्तर
- Noble gases have completely filled valence shell i.e., complete octet (except He with complete duplet).
- Since their valence shell contains eight electrons, they experience greater electronic repulsion and this results in increased atomic size (atomic radii) of the noble gas elements.
Hence, noble gases possess relatively large atomic size.
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