What is meant atomic radius? Explain why it decreases across a period?
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psj
The atomic radius of a chemical element is a measure of the size of itsatoms, usually the mean or typical distance from the center of the nucleus to the boundary of the surrounding cloud of electrons.
july2013
ANSWER OF THE SECOND PART OF Q. There is a strong force of attraction that pulls the electrons close to nucleus that leads to smaller atomic radius.
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There is a strong force of attraction that pulls the electrons close to nucleus that leads to smaller atomic radius.