Question

scientists have changed the model of the atom as they have gathered new evidence. one of the atomic models is shown below. what experimental evidence led scientists to change from the previous model to this one? a few of the positive particles aimed at a gold foil seemed to bounce back. the colors of light emitted from heated atoms had very specific energies. experiments with water vapor showed that elements combine in specific proportions. cathode - rays were bent in the same way whenever a magnet was brought near them.

Explanation:

The model shown is a Bohr - type atomic model. The evidence that led to the development of this model was the discovery that the colors of light emitted from heated atoms had very specific energies. This is related to the quantization of energy levels in atoms. The gold - foil experiment (alpha - particle scattering) led to the discovery of the nucleus. The fact that elements combine in specific proportions is related to Dalton's atomic theory. Cathode - ray experiments led to the discovery of electrons.

Answer:

The colors of light emitted from heated atoms had very specific energies.