Who were the key scientists behind atomic theory?

Who were the key scientists behind atomic theory?

The key scientists include John Dalton, J.J. Thomson, Ernest Rutherford, and Niels Bohr. Each contributed significantly to our understanding of atomic structure.

What did John Dalton propose in his atomic theory?

John Dalton proposed that matter is made up of indivisible atoms, and that each element consists of identical atoms with specific weights.

How did J.J. Thomson's experiments change our understanding of the atom?

J.J. Thomson discovered the electron through his cathode ray experiments, which led to the realization that atoms are not indivisible.

What was Ernest Rutherford's contribution to atomic theory?

Ernest Rutherford conducted the gold foil experiment, which revealed that atoms have a small, dense nucleus at their center, changing the model of the atom.

Can you explain Niels Bohr's model of the atom?

Niels Bohr proposed that electrons orbit the nucleus in fixed paths or energy levels, introducing the concept of quantized energy states.