Question

what question remained after rutherfords experiment that bohr helped to answer? what prevented the positively charged nucleus from repelling the positively charged electrons and causing the atom to collapse? what prevented the positively charged nucleus from pulling the negatively charged electrons in and causing the atom to collapse? what prevented the negatively charged nucleus from repelling the negatively charged electrons and causing the atom to collapse? what prevented the negatively charged nucleus from pulling the positively charged electrons in and causing the atom to collapse?

Explanation:

Rutherford's model showed a small, dense, positively - charged nucleus with electrons outside. The problem was that according to classical physics, the positively charged nucleus should pull in the negatively charged electrons, causing the atom to collapse. Bohr proposed quantized energy levels for electrons to address this.

Answer:

B. What prevented the positively charged nucleus from pulling the negatively charged electrons in and causing the atom to collapse?