Identify the most stable atom from the f...

Identify the most stable atom from the following .Alson given the reason for your answer: ltbr. `Na_(11)^(23),CI_(17)^(35),AI_(13)^(27),Ar_(18)^(40)`

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Argon `overset(40)underset(18)Ar` is the most stable atom .Iit is a noble gas atom with completely filled shells (2,8,8).

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