2 consider an n molecule in its first excited electronic state that is
2. Consider an N₂ molecule in its first excited electronic state, that is, when an electron in the
highest occupied molecular orbital is promoted to the lowest unoccupied molecular orbital.
(a) Identify the molecular orbitals involved and sketch a diagram for the transition. (b)
Compare the bond order and bond length of N₂ with N₂, where the asterisk denotes the
excited molecule. (c) Is N₂ diamagnetic or paramagnetic? (d) When N₂ loses its excess
energy and converts to the ground state, it emits a photon of wavelength 470 nm, which
makes up part of the auroras lights. Calculate the energy difference in kJ/mol between these
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