Who Made the Current Atomic Theory?

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Vincent White

The current atomic theory is a result of the contributions made by several scientists over time. It is an essential concept in chemistry and physics that explains the structure of matter and its behavior.

John Dalton

One of the first scientists to propose the idea of atoms was John Dalton. In 1803, he introduced his atomic theory, which stated that all matter is composed of tiny, indivisible particles called atoms. He also proposed that atoms of different elements have different masses and properties.

J.J. Thomson

In 1897, J. Thomson discovered the electron and proposed a new model for the atom. He suggested that atoms were made up of positively charged material with negatively charged electrons embedded in it, similar to raisins in a pudding. This model was called the plum pudding model.

Ernest Rutherford

Ernest Rutherford conducted an experiment where he fired alpha particles at a thin sheet of gold foil in 1911. He discovered that some alpha particles were deflected at large angles, which led him to propose a new model for the atom. He suggested that atoms had a small, positively charged nucleus surrounded by negatively charged electrons orbiting around it.

Niels Bohr

Niels Bohr expanded on Rutherford’s model and proposed that electrons orbiting around the nucleus could only occupy specific energy levels or shells. This led to the development of quantum mechanics and helped explain why certain elements emit light at specific wavelengths.

James Chadwick

In 1932, James Chadwick discovered the neutron, which is an uncharged particle found in the nucleus of an atom. This discovery helped explain why some elements had isotopes with different masses but similar chemical properties.

In conclusion, various scientists made significant contributions to our understanding of atoms and their structure over time. The current atomic theory is a result of their collective efforts and continues to evolve as new discoveries are made.

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