Why was Rutherford’s planetary model rejected?

Firstly, the planetary model of the atom failed to explain why individual atoms produce discrete line spectra. In fact, according to Rutherford’s model, each individual atom should produce a continuous line spectrum. The second flaw to his model was the fact that electrons orbit the nucleus in a circular fashion.

Why was Rutherford’s model rejected?

His model was incomplete because it did not mention anything about the arrangement of electrons in the orbit.

What was the problem with Rutherford’s planetary model?

The main problem with Rutherford’s model was that he couldn’t explain why negatively charged electrons remain in orbit when they should instantly fall into the positively charged nucleus. This problem would be solved by Niels Bohr in 1913 (discussed in Chapter 10).

Why did Bohr reject Rutherford’s planetary model?

In 1912 Bohr joined Rutherford. He realized that Rutherford’s model wasn’t quite right. By all rules of classical physics, it should be very unstable. For one thing, the orbiting electrons should give off energy and eventually spiral down into the nucleus, making the atom collapse.

How was Rutherford model disproved?

Ernest Rutherford discovered the atomic nucleus using a cathode ray tube. When alpha particles are fired at a thin gold foil, they never go through. Ernest Rutherford proved that the plum-pudding model was incorrect. Ernest Rutherford experimented by firing cathode rays at gold foil.

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Why Rutherford Cannot explain stability of atom?

It could not explain the stability of an atom because he thought that electrons while revolving in a circular path release energy and the revolving electrons will lose energy and finally fall into the nucleus. Due to this, he was unable to prove atom stable….

Why were these atomic model being rejected?

1) Rutherford’s experiment showed that there is so much of empty space in an atom but according to Thomson’s model there is no empty space in the atom. … And according to Thomson’s model there is no scope for nucleus. These were the reasons which led to rejection of Thomson’s model of atom.

When was the Bohr model disproved?

The plum-pudding model was disproved by 1911, when Rutherford showed that alpha particles fired at atoms sometimes bounce right back the way they came, as if they had struck a massive obstacle in the atom—a nucleus. Some form of planetary model was necessary to explain the behavior of atoms.