- #1
newguy1234
- 13
- 0
hello i have a basic question regarding energy levels of electrons in atoms in bohr's model of the atom. From what I understand if an electron is in an energy level other than the ground state it can either absorb a photon equal to the difference of energy between its energy level and a higher level, or emit a photon with an energy equal to the difference between its energy and a lower energy level.
What i don't understand is if let's say for a hydrogen atom the electron is at level n=2. In order for it to move up to a higher level n=3 it needs to absorb a photon of energy about 1.9eV. If a photon with an energy of 2.1eV was passing through would it be absorbed partially? moving the electron up a level then exiting with an energy of .2eV? or would it simply pass through not being absorbed? and if so why?
Also is this the same for electrons? for example the Franck Hertz experiment seems to suggest that electrons can give up some of their kinetic energy through inelastic collisions to electrons in an atom to bump them up an energy level. and then exit with their remaining KE. what makes them be able to give only a partial amount of their energy and what makes the photons on able to give all or nothing of theirs? Thanks for your help and sorry if i am completely wrong on this
What i don't understand is if let's say for a hydrogen atom the electron is at level n=2. In order for it to move up to a higher level n=3 it needs to absorb a photon of energy about 1.9eV. If a photon with an energy of 2.1eV was passing through would it be absorbed partially? moving the electron up a level then exiting with an energy of .2eV? or would it simply pass through not being absorbed? and if so why?
Also is this the same for electrons? for example the Franck Hertz experiment seems to suggest that electrons can give up some of their kinetic energy through inelastic collisions to electrons in an atom to bump them up an energy level. and then exit with their remaining KE. what makes them be able to give only a partial amount of their energy and what makes the photons on able to give all or nothing of theirs? Thanks for your help and sorry if i am completely wrong on this