Practicing Success
Practicing Success
CUET Preparation Today
Which of the following phenomena suggests the presence of electron energy levels in atoms |
Radio active decay Isotopes Spectral lines α - particles scattering |
Spectral lines |
| Lines in the spectrum were due to transitions in which an electron moved from a higher-energy orbit with a larger radius to a lower-energy orbit with smaller radius. The orbit closest to the nucleus represented the ground state of the atom and was most stable; orbits farther away were higher-energy excited states. |
