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Noble Gases Have Comparatively Large Atomic Sizes - CBSE (Science) Class 12 - Chemistry

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Question

Why do noble gases have comparatively large atomic sizes?

Solution 1

Noble gases do not form molecules. In case of noble gases, the atomic radii corresponds to van der Waal’s radii. On the other hand, the atomic radii of other elements correspond to their covalent radii. By definition, van der Waal’s radii are larger than covalent radii. It is for this reason that noble gases are very large in size as compared to other atoms belonging to the same period.

Solution 2

This is because noble gases have only van der Waal’s radii while others have covalent radii, van der Waal’s radii are larger than covalent radii.

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APPEARS IN

 NCERT Solution for Chemistry Textbook for Class 12 (2018 to Current)
Chapter 7: The p-block Elements
Q: 39 | Page no. 208

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Solution Noble Gases Have Comparatively Large Atomic Sizes Concept: P - Block Group 16 Elements - Dioxygen.
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