Question

which statement describes a major drawback of the bohr model that caused scientists to replace it? it worked only for helium and larger atoms. it did not identify the distance between an electron and the nucleus. it contradicted the heisenberg uncertainty principle. it stated that spectral lines of atoms are similar.

Explanation:

The Bohr model assumed electrons had definite orbits with known positions and momenta, which contradicts the Heisenberg uncertainty principle that states it's impossible to simultaneously know both the position and momentum of a particle precisely. The Bohr model worked mainly for hydrogen - like atoms, not helium and larger atoms as stated in the first option. It did estimate the distance of electrons from the nucleus in its orbit concept. And it did not claim that spectral lines of atoms are similar.

Answer:

It contradicted the Heisenberg uncertainty principle.