Question

In a particular period, with increase of atomic number atomic radii of elements decrease gradually

but in case of inert gases atomic radii increases –why ?​

Answer 1

Answer:

Atomic radius decreases in a period, but after halogens, the atomic radius suddenly increases. Thus, inert gases has almost highest radius in a period. The explanation for such an increase is Van der Wall's radius is reported in case of inert gases. ... The Van der Waals forces are the only attractive forces.

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