the photoelectron spectra above show the energy required to remove a 1s electron from a nitrogen atom and from an oxygen atom. which of the following statements best accounts for the peak in the upper spectrum being to the right of the peak in the lower spectrum? responses nitrogen atoms have a half-filled p subshell. nitrogen atoms have a half-filled p subshell. there are more electron-electron repulsions in oxygen atoms than in nitrogen atoms. there are more electron-electron repulsions in oxygen atoms than in nitrogen atoms. electrons in the p subshell of oxygen atoms provide more shielding than electrons in the p subshell of nitrogen atoms. electrons in the p subshell of oxygen atoms provide more shielding than electrons in the p subshell of nitrogen atoms. nitrogen atoms have a smaller nuclear charge than oxygen atoms.