Question

Define atomic radius. Write its trends in periodic table.

Answer 1

Explanation:

The atomic radius of a chemical element is a measure of the size of its atoms, usually the mean or typical distance from the center of the nucleus to the boundary of the surrounding shells of electrons. ... Three widely used definitions of atomic radius are: Van der Waals radius, ionic radius, and covalent radius.

Answer 2

atomic radius is the distance between the atomic nucleus and the outermost shell of the atom.

• it is the measure of the size of an atom.
• the unit in which it is measured is picometer  , 10∧-12 meter.
• the trend of the atomic radius across the period is that it increases from top to bottom.
• the trend of atomic radius along the group is that it decreases from left to right.
• as we move along the group the size decreases as the radius get compressed as more and more electrons get added.