what are the conditions for the change in atomic radius in groups and periods of elements in the Modern periodic table? What does it mean?
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atomic radius increases down the group and decreases when move left to right in period.
roumit:
why it occurs?
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In groups:-
The atomic radius increase due to increase in no. of outer most shell.
In periods:-
The atomic radius decrease because the increase in no. of electron in outermost shell.As the electron increase in outermost shell the nuclear force exerted from the nucleus increase and the outermost shell came closer to the nucleus forming small in radius of atom.
The atomic radius increase due to increase in no. of outer most shell.
In periods:-
The atomic radius decrease because the increase in no. of electron in outermost shell.As the electron increase in outermost shell the nuclear force exerted from the nucleus increase and the outermost shell came closer to the nucleus forming small in radius of atom.
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