NEET UG CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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The element with electronic configuration

1{s^2}2{s^2}2{p^6}3{s^2}

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Correct option: C

an alkaline earth metal

Option C (an alkaline earth metal) is correct because the electronic configuration

1{s^2}2{s^2}2{p^6}3{s^2}

indicates that the element has 2 valence electrons in the s-orbital of the outermost shell, which is characteristic of alkaline earth metals.

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