1.

Definition of size of atom and how it will vary group and period

Answer»

of an ATOM is the distance from the centre of the nucleus to the valence electron of the atom.1) Along a group: The atomic radius increases from top to BOTTOM in a group due to addition of NEW shell.2) Along a period: The atomic radius decreases from LEFT to RIGHT in a period because of increasing effective nuclear charge.I hope this helped you. All the very best for your studies.



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