Asked by Anushasen | 20th Sep, 2008, 06:19: PM

Expert Answer:

The atomic size decreases when we move left to right in the periodic table ,this is due to increase in nuclear charge attraction between the nucleus and valence electron.That is why the atomic size of  chlorine more than argon.

Answered by  | 21st Sep, 2008, 03:11: PM

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