Electron configuration elements atoms and ions

Can someone me with questions 12 and 13 plz.

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled

Equal numbers of moles of he(g), ar(g), and ne(g) are placed in a glass vessel at room temperature. if the vessel has a pinhole-sized leak, which of the following will be true regarding the relative values of the partial pressures of the gases remaining in the vessel after some of the gas mixture has effused?