Question

automic radius goes on decreasing while going form left to right in a period give scientific reason
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Answer 1

Correct Question :

Atomic radius decreases moving from left to right in a period . Give scienctific reason.

Explanation :

The distance between the outermost (or) valence electron and the nucleus is defined as Atomic radius. Atomic radius increases with the increase in number of shells.While moving across a group the electrons get added to different shells (shells increases) Similarly Atomic radius also increases . Hence , On moving top to bottom in a group the Atomic radius increases.

Coming to period , On moving from left to right Electrons get added to same shell which results in decrease (or) no change in atomic radius. Hence , On moving left to right in a period the atomic radius decreases. There are many other factors which influence atomic radius.

Answer 2

Explanation:

Correct Question :

Atomic radius decreases moving from left to right in a period . Give scienctific reason.

Explanation :

The distance between the outermost (or) valence electron and the nucleus is defined as Atomic radius. Atomic radius increases with the increase in number of shells.While moving across a group the electrons get added to different shells (shells increases) Similarly Atomic radius also increases . Hence , On moving top to bottom in a group the Atomic radius increases.

Coming to period , On moving from left to right Electrons get added to same shell which results in decrease (or) no change in atomic radius. Hence , On moving left to right in a period the atomic radius decreases. There are many other factors which influence atomic radius.\begin{gathered}\\\end{gathered}