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  4. In a period, atom with smallest radius generally is:

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Q. In a period, atom with smallest radius generally is:

NTA AbhyasNTA Abhyas 2022

Solution:

In a period on moving left to right $Z_{\text {effective }}$ increases, so atomic size decreases. For inert gases, Van der waal radius is considered, so it is bigger in size as compared to halogens.