Multiple choice

The atomic size of elements on moving from left to right in a period :

  1. decreases

  2. increases

  3. first decreases then increases

  4. remains same
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A Correct answer
Explanation

There is increase in atomic no. as well as nuclear charge of the atoms of the elements when we go from left to right in a period. But, no new shell is added, which means more number of protons attracts the electrons present at the same distance from them. So there is a decrease in radius or atomic size of the atoms.

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