Question

what did niels bohr said was the problem with rutherfords model?
there is not enough electrons surrounding the nucleus.
electrons emit radiation as they move around the nucleus.
electrons must be stationary but they are not.
electrons will spiral into the nucleus annihilating the atom.

Explanation:

According to classical electromagnetic theory, electrons in Rutherford's model, which are in circular - motion around the nucleus, would emit radiation as they accelerate. This would cause them to lose energy and spiral into the nucleus, annihilating the atom. This was the problem Bohr identified.

Answer:

Electrons will spiral into the nucleus annihilating the atom.