scientists have changed the model of the atom as they have gathered new evidence. one of the atomic models…
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.
Answer
Brief Explanations:
The model shown is the Bohr - model of the atom. The evidence that led to the development of the Bohr - model was that the colors of light emitted from heated atoms had very specific energies. This is because the Bohr - model proposed that electrons could only occupy certain discrete energy levels, and when they transitioned between these levels, they emitted light of specific frequencies corresponding to the energy differences between the levels. The first option is related to the Rutherford gold - foil experiment which led to the nuclear model of the atom. The third option is related to the law of definite proportions in chemistry and not to the atomic model shown. The fourth option is related to the discovery of electrons as negatively - charged particles and not to the Bohr - model.
Answer:
The colors of light emitted from heated atoms had very specific energies.