Question

The "fatal flaw" in Rutherford's model of the atom, which was corrected by Bohr's model, was the idea that, if the electrons were:
Answers:
A: orbiting the nucleus, changing direction and thus giving off energy, the electrons would lose all energy and collapse into the nucleus
B: moving so rapidly, they would spiral away from the nucleus and be lost 
C: not moving they could not maintain their distance from the nucleus
D: located too far from the nucleus they would not be attracted

Answer 1

Answer:  A: orbiting the nucleus, changing direction and thus giving off energy, the electrons would lose all energy and collapse into the nucleus

Explanation: Rutherford's experiment of thin gold foil was not able to explain the the continuously revolving motion of the electrons around the nucleus.

It was questioned at that time that if the electrons are orbiting around the nucleus then at some point hey must lose all their energy would fall in the vicinity of the nucleus.

Thus Bohr's idea came in to the lime light at that point and explained that electrons are revolving around the nucleus at a certain distance which is know as orbit.

Answer 2

The answer is

A. orbiting the nucleus, changing direction and thus giving off energy, the electrons would lose all energy and collapse into the nucleus.

Bohr stated that electron can be only on certain distances from nucleus. Electrons can be only on allowed orbits.