Question

1. Rutherford's model of the atom was unstable because
(a) nuclei will break down
(b) electrons do not remain in orbit
(c) orbiting electrons radiate energy
(d) electrons are repelled by the nucleus
lectron biting around
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Answer 1

orbiting electrons radiate energy.

Answer 2

Rutherford's model of the atom was unstable because electrons do not remain in orbit and the other reason is orbiting electrons radiate energy.

Explanation:

• Rutherford's never said anything that can specify the term "nuclei will break down" so that term was not the reason.
• "electrons do not remain in orbit" that term is correct in some way because rutherford's model never specifies how electrons will revolve, he only said that electrons will revolve around the nucleus and in that case, if electrons will not stay in orbit then the model will be unstable.
• "orbiting electrons radiate energy" that term was from maxwell's theory and it is correct because if any electric charge will accelerate then it will continuously lose the energy in the form of radiation and it was the major reason behind the unstability of rutherford's model.