I can see two answers, I’d go with D, but all neutral atoms, of the same element would have the same number of outer electrons. However, if you consider that some of the atoms might be ions, that would eliminate B.
The two sublevels are s and p. These are the main group sublevels
<span>A) mL / s
This is the amount of milliliters per second</span>
A) eventually they will be in thermal equilibrium
The answer is 14.22 mg / (mm^2)