Question

atomic radius goes on decreasing while going from left to right in a period give reason
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Answer 1

In a period while going from left to right, atomic radius decreases and the atomic number increases one by one, that means positive charge on the nucleus increases by one unit at a time. However, the additional electron gets added to the same outermost shell. Due to the increased nuclear charge the electrons are pulled towards the nucleus to a greater extent, as a result the size of atom decreases i.e., atomic radius decreases.

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