Question

how to determine atomic radius of an atom

Answer 1

1.An atom gets larger as the number of electronic shells increase; therefore the radius of atoms increases as you go down a certain group in the periodic table of elements.
In general, the size of an atom will decrease as you move from left to the right of a certain period.

Answer 2

Periodic Trends of Atomic Radius

1. An atom gets larger as the number of electronic shells increase; therefore the radius of atoms increases as you go down a certain group in the periodic table of elements.
2. In general, the size of an atom will decrease as you move from left to the right of a certain period.