Explain why excited atoms only emit certain frequencies of radiation after an electron collides with the atom
- Radiation is emitted via photons2) Photon energy is governed by the equation E = hc/wavelength, where h = the Planck constant and c = the speed of light. Both h and c are constants3) Electrons have discrete energy levels, so the change in energy of the atom is also discrete4) As photon energy is inversely proportional to the wavelength and the photon energy is discrete, the wavelength and frequency of the emitted photons must also be discrete.
MH
Related Physics A Level answers
All answers ▸How is a particle moving in circular motion accelerating but not varying speed?
How does having a rotating plate in a microwave help food to be heated eavenly?
A ball is thrown vertically downwards at a speed of 10ms^-1 from a height of 10m. Upon hitting the floor 10% of the energy is dissipated through waste heat. What is the heighest point the ball reaches before it comes to rest? Take g=10ms^-2
Name an experiment proving that light is wave and one that is proving that light consists of particles.