Atomic radius decreases in a period due to

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Increase in nuclear attraction

Decrease in nuclear attraction

Increase in number of electrons

Decrease in number of electrons

answer is A.

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Detailed Solution

Across a period the atomic size decreases as the number of shells remain the same but the electrons are been added so the nuclear charge increases. This leads to the stronger pulling of electrons from the outermost shell towards the nucleus thereby decreasing the size.

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Best Online Course for IIT JEE

Best Online Course for NEET

Best Online Course for CBSE