Write scientific reason. The non-metallic character increases whi… - Vidyadip

Question

Write scientific reason.
The non-metallic character increases while going from left to right in a period.

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Answer

While going from left to right in a period, electrons are added to the same outermost shell. At the same time, protons get added in the nucleus increasing the nuclear charge.
Hence, these electrons experience greater pull from the nucleus due to increased effective nuclear charge.
As a result, the ability of an atom to become anion by accepting outside electrons increases.
The non-metallic character of an atom is its tendency to gain electrons.
Hence, non-metallic character increases while going from left to right in a period.

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