Noble gases have larger atomic size than the preceeding halogens because

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They are gases

They have low reactivity

Vanderwaals radius is considered in them

They are insoluble in water

answer is C.

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Detailed Solution

The size of the atom of an element decreases as we move from left to right of a period due to the increase in Ionisation potential and effective nuclear charge. Now the trend continues till halogens.
The noble gases have full filled outer and inner shells so there comes a repulsive force between the electrons resulting in a larger atomic size compared to the halogens.

Therefore, Noble gases have larger atomic size than the preceding halogens because Vander Waals radius is considered in them.

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