STANDARD Chemistry Effective Nuclear Charge MCQ Question
For the electrons of oxygen atom, which of the following statements is correct?
Zₑff for an electron in a 2s orbital is the same as Zₑff for an electron in a 2p orbital.
An electron in the 2s orbital has the same energy as an electron in the 2p orbital.
Zₑff for an electron in 1s orbital is the same as Zₑff for an electron in a 2s orbital.
The two electrons present in the 2s orbital have spin quantum numbers, mₛ, but of opposite sign.
Correct Answer
Detailed Explanation
Zₑff for an electron in a 2s orbital is greater than that in a 2p orbital (s orbital is more tightly bound to the nucleus than p orbital).
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