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Which of the following is an inert gas?...

Which of the following is an inert gas?

A

`H_(2)`

B

`O_(2)`

C

`N_(2)`

D

`Ar`

Text Solution

Verified by Experts

The correct Answer is:
D
`Ar(Z = 18): 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)`. Since all the subshells are comnpletely full, argon is a noble gas (intert gas).
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