Question

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

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

Answer 1

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