John Dalton

John Dalton is the first chemist to introduce the theory of atomic structure in the 1800s.

.

.

.

J.J Thomson

J.J Thomson proposed the second theory of atomic structures. The second theory was the plum pudding model in 1904 , it is the first scientific model of an atom with internal structure.

.

.

.

Text

Ernest Rutherford

Ernest Rutherford is a former student of J.J Thomson and proved that his structure is incorrect in 1911.

By the assistance of

Ernest Marsden

Hans Geiger

.

.

.

.

Niels Bohr

Niels Bohr made the fourth model of the atomic structure which is the planetary model and is also called the Bohr's Model in 1913.

.

.

.

.

Erwin Schrodinger

Erwin Schrodinger proposed the quantum model in 1926.

.

.

.