Niels+Bohr+A3

Bohr was responsible for altering existing models of the atom. His theory stated that electrons revolve in specific orbits around the nucleus and have a specific radius. Also, each electron had a fixed amount of energy. The further distance away from the nucleus, the greater amount of energy and the closest to the nucleus, the smaller amount of energy. However, even though electrons have a specific orbit and energy levels, they can jump from orbit to orbit.
 * Niels Bohr**
 * His Theory:**

Bohr's model was important because it added the theory of quantum mechanics to Rutherford's model. Also it was important because he said that electrons had fixed spots and distances.
 * Changes from Previous Models:**

Today, scientists have discovered problems with Bohr's atomic model. First, Heisenberg has disproved an aspect of Bohr's theory with the uncertainty principle. Also, it helped Shrodinger's i.dea lead to probability waves.
 * Problems We Know Today:**