Question

What is Atomic Size and Atomic Radius?

Answer 1

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Atomic Size is the distance between the centre of the nucleus of an atom and its outermost shell. It depends upon the number of shells and nuclear charge.

Atomic Radius is half the inter-nuclear distance between the combined atoms in a molecule.

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Answer 2

Explanation:-

Atomic size and Atomic radius are basically similar terms which is used in Nuclear chemistry.

Atomic Size → It is defined as the distance between the nucleus to the outermost shell or orbit of an atom is called Atomic size.

Atomic size depends upon following factors :-

• Size of the nucleus

• Nuclear charge on atom.

• Number of shells in an atom.

In periodic table Atomic size or Atomic radius increased down the group but decreased when move along a period.

Therefore , Different atoms have different atomic size or atomic radii.