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Niels Bohr changed Rutherford model to incorporate new discoveries. Bohr proposed that an electron is found in circles.

A quantum of energy is the quantum to move an electron from from one energy level.

How does the Bohr model improve upon the rutherford model. Rutherford model couldnt explain how elements increased to higher temperatures.

Erwin Schordinger he used new theorical calculations to solve a mathemathic equation describing the behavior of a electron.

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The principal quantum number, n , always equals the number of sublevels within that principal energy level.

The number orbitals in a principal energy level is equal to n2

Therefore the maximum number of electrons that can accupy a principal energy level is given by the fromula 2n2