As one gains altitude in the atmosphere, based on the ionization energies shown below, which sequence of mole fractions is the correct one?

Question

Quizplus · Accepted Answer

Based on the ionization energies, as one gains altitude in the atmosphere, the order of increasing mole fractions would be: NO < O < O₂ < N₂ Therefore, option B is the correct sequence. Option A and D are incorrect because NO has the lowest ionization energy and should therefore be the first molecule in the sequence. Option C is incorrect because it places N after O₂, but N has a lower ionization energy than O. Option E is incorrect because the ionization energies of the molecules are not equal.

As One Gains Altitude in the Atmosphere, Based on the Ionization