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An element in period 3 whose electron af...

An element in period 3 whose electron affinity is zero.

A

Neon

B

Sulphur

C

Sodium

D

Argon

Text Solution

Verified by Experts

The correct Answer is:
D
The change in energy (in kJ/mole) of a neutral atom (in the gaseous phase) when one electron is added to create a negative ion is called electron affinity. So, Argon belongs to period 3. It is an inert element and stable. It neither requires to gain electron nor lose.
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