For the electrons of an oxygen atom, which of the following statements is correct? - Noon Academy

For the electrons of an oxygen atom, which of the following statements is correct?

Chemistry | Class 11 | Exercise 1 | NCERT | Structure of Atom

For the electrons of an oxygen atom, which of the following statements is correct?

(i) Zeff for an electron in a 2s orbital is the same as Zeff for an electron in a 2p orbital.

(ii) An electron in the 2s orbital has the same energy as an electron in the 2p orbital.

(iii) Zeff for an electron in 1s orbital is the same as Zeff for an electron in a 2s orbital.

(iv) The two electrons present in the 2s orbital have spin quantum numbers m_s but of opposite sign.

Correct Answer: (iv) The two electrons present in the 2s orbital have spin quantum numbers m_s but of opposite sign

Explanation: According to Pauli’s exclusion principle, the two electrons present in the 2s orbital have spin quantum number m_s but of opposite sign.

i

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