NEET Chemistry Effective Nuclear Charge MCQ Question
For the electrons of oxygen atom, which of the following statements is correct?
Z_eff for an electron in a 2s orbital is the same as Z_eff for an electron in a 2p orbital.
An electron in the 2s orbital has the same energy as an electron in the 2p orbital.
Z_eff for an electron in 1s orbital is the same as Z_eff 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
Electrons in the same orbital must have opposite spins due to the Pauli exclusion principle.
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