Atomic Timeline
by johnathan Stephens
1803-John Dalton
John Dalton pictured atoms as tiny, indestructible particles, with no internal structure
1897-J.J Thomson
A british scientist who discovered the electron which led to the creation of the plum pudding model
1904-Hantaro Nagoaka
He suggested that an atom has a central nucleus and the electrons move in orbits like Saturn's rings
1911-Ernest Rutherford
He stated that an atom has a dense, positively charged nucleus and that electrons move randomly around the nucleus
1913-Niels Bohr
In his model, the elections move in spherical orbits at fixed distances from the nucleus
1924- Louis de Broglie
He proposed that moving particles like electrons have some properties of waves.
1926- Erwin Schrodinger
He developed mathematical equations to describe the motion of electrons in atoms
1932-James Chadwick
He confirms the existence of neutrons,which have no charge.