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Q.

Among the following, the elements with stable  electronic configuration are

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a

Krypton

b

Xenon

c

Aluminium

d

chlorine

answer is C.

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Detailed Solution

The elements with stable electronic configuration are Krypton and Xenon. These two elements contains 8 electrons in the valency shell. So, these two are stale elements.
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Among the following, the elements with stable  electronic configuration are