Absorption/atomic spectra

[Mariam Baghdasaryan 4F]

If the electron went from a lower energy state (i.e. n to higher energy state that would indicate absorption, so the difference in energy would be positive instead of negative. Would the photon energy still be positive in this case since it is no longer an emission?

[Chem_Mod]

The light that you're shining on the atom would be absorbed, so the photon would lose energy (-), and the electron would gain energy (+).

[Jonathan Pai 2I]

The photon energy is a positive energy into the electron, so in the system it can be thought of as negative and electron positive(conservation of energy), but the photon energy itself is positive,just depends if it's going in or out of the system(direction).

[pauline_le_3I]

Yes it would still be positive. The negative sign only tells us in what direction the energy is going (away from the nucleus/toward the nucleus). Energy by itself is always positive though.