Question

What is the definiaiton of atomic radius? Explain in how does atomic radius vary in a period from left to right and down in a group. ​

Answer 1

Answer:

The atomic radius of a chemical element is a measure of the size of its atoms.In general, the atomic radius decreases as we move from left to right in a period with an increase in the nuclear charge of the element. ... Atomic radius or Atomic Radii is the total distance from the nucleus of an atom to the outermost orbital of its electron.

Answer 2

Atomic size is the distance between the center of the nucleus of an atom and its outermost shell and the atomic radius is defined as the shortest distance between the atom’s nuclei and the outermost shell of the atom.

Atomic radius

In general, the atomic radius decreases as we move from left to right in a period with an increase in the nuclear charge of the element. The atomic radius increases when we go down a group because of the addition of an extra shell. Atomic radius or Atomic Radii is the total distance from the nucleus of an atom to the outermost orbital of its electron. The nucleus is analogous to be the center of the circle and the outermost orbital of the electron to the outer edge of the circle. It is difficult to determine the atomic radii because of the uncertainty in the position of the outermost electron.