why the energy of sigma2pz is less than pi2px and pi2py in oxygen molecule O2?
Answers
Explanation:
The energy levels of sigma 2pz and pi2px and pi2py are switched, meaning that for these cases the pi2px and pi2py (degenerate) are lower than sigma 2pz. The anti bonding orbitals are not switched. This switch in energy level is because of interference between sigma 2s* and sigma 2pz.
The energy of sigma2pz is less than pi2px and pi2py in oxygen molecule O2 is due to interference.
Explanation:
sigma 2pz is written first because
The molecular orbitals in a diatomic molecule are in the row n=2 of the periodic table.
σ2p orbitals in the different molecules is found.
Energy of the orbitals gets lower as the charge gets more positive.
Oxygen molecule gets lowered below the pair of π2p orbitals.
pi orbitals do not get lowered much due to the mixing of s orbitals
The energy of sigma 2pz is less than pi2px and pi2py.
pi2px and pi2py both degenerate are lower than sigma 2pz
this energy level switching is due to the interference between 2s and sigma2pz.