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JEE CHEMISTRY MCQ: STRUCTURE OF ATOM

1 Medium

1 of 1

Understanding +4 | -1

Choose the correct energy order for

2 s

orbital

View answer and explanation

Correct option: A

{He}(2 s)>{Li}(2 s)>{Be}(2 s)

Option A (

{He}(2 s)>{Li}(2 s)>{Be}(2 s)

) is correct because the energy of an orbital decreases with increasing nuclear charge for the same principal quantum number.

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