History of the atom

Democritus

460 BCE

First person to suggest atoms. Atoms are indivisible and indestructible.

John Dalton

1803

Came up with the idea of the word atom and his theory stated that atoms are invisible

J.J. Thomson

1904

He discovered electrons in atom in 1897

ernest ruthford

1911

he put positive particles and charged them at a sheet of gold foil and he found the nucleus

Niels Bohr

1913

Erwin Schrodinger

1926