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

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The element whose electronic configuration is

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

is:

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Correct option: B

Metal

Option B is correct because the element with the electronic configuration

1s^22s^22p^63s^2

has 2 valence electrons in the 3s orbital, indicating it is a metal (specifically Magnesium).

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