Question

Which of the following molecular orbital
has the lowest energy for O2 molecule?
(A) 0 2p2
(B)
(C) TT 2pz
(D) 2px​

Answer 1

Answer:

Energy of bonding orbitals is less than antibonding orbital so σ2px has lowest energy than other given.

Answer 2

π2pz molecular orbital has the lowest energy for O2 molecule. (Option C)

• A molecular orbital is a mathematical function describing the location and wave-like behavior of an electron in a molecule.
• This function can be used to calculate chemical and physical properties such as the probability of finding an electron in any specific region.

• O2  :- σ1s2σ∗1s2σ2s2σ∗2s2σ2p2Π2p2xΠ2p2yΠ∗2p1xΠ∗2p1y is the electronic configuration of oxygen molecule.

• Energy of bonding orbital is less than antibonding orbitals.

• The energy of π2pz is less than π2px and π2py in oxygen molecule O2 is due to interference.

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