What was Bohrs contribution to the atom?

Answer 1

Bohr's atomic model introduced some mechanical aspects to the atomic model, and, more importantly, it provided a theoretical frame for Rydberg's formula, which had been observed only empirically.

Answer 2

Niels Bohr developed the "Planetary" model of the atom. Bohr's model of the atom was not unlike our view of the Solar System in which we reside. The nucleus of the atom was likened to our Sun, and the electrons in orbit around the nucleus are likened to the planets.

Bohr's planetary model was nice - it did introduce the concept of electron motion to the atomic model - but it could not accurately explain how atoms interacted with each other.

The main model used in the modern chemistry classroom is usually the Quantum Mechanical model. This model differs from Bohr's model in that it proposes "probable" locations of electrons in "clouds" around atomic nuclei - but not definite "planetlike" orbits as Bohr postulated.

It should be noted that Niels Bohr seemed to have a lot of fun while studying and teaching his theories. He was widely spoken of as a fun-loving, jocular scientist, even capable of the odd practical science joke. Interesting...

Answer 3

A tiny bit of history.

First models of the atom were the 'plum pudding' model - electrons and nucleus were recognized, but no detail.

Second, comes Rutherford, which postulates orbiting electrons, and this was modified by Bohr to include Rydberg's calculations on spectral lines, to emerge as what is commonly called the Rutherford-Bohr model.

With the mathematical rigour for orbit dynamics known, they could then calculate expected emission frequencies.

Answer 4

Bohr made the model of the atom that contributed to the modern atomic model.