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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 to the development of this atomic model from the one before it?

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.
Equations were used to identify regions around the nucleus where electrons would likely be.
Cathode rays were bent in the same way whenever a magnet was brought near them.

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

Models of the atom have been changing based on changing scientific evidence about the structure of the atom.

The immediate predecessor of the model shown in the image attached is the  Rutherford's planetary model in which electrons are shown to be moving round the nucleus as planets move round the sun in the solar system.

However, the observation of colors of light emitted from heated atoms which had very specific energies led to the development of this model from the Rutherford's planetary model.

This model of the atom is largely due to the work of Niels Bohr hence it is called the Bohr model of the atom. Electrons are arranged in shells or energy levels, transition of electrons between energy levels led to the colors of light emitted from heated atoms.

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The answer would be B.

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