rutherford alpha particle scattering experiment class 9

Describe Rutherford's scattering experiment.

Rutherford's scattering experiment: rutherford conducted a gold foil experiment where he bombarded a very thin gold foil with alpha particles. the thickness of the gold foil is ~ 100 nm with alpha particles in an evacuated chamber. around the foil, a circular fluorescent screen is coated with zinc sulphide ( zns ). when the alpha particles were passed through a slit in a lead plate, they struck the screen and produced a flash of light. rutheford explained the sub-atomic particles would deflect the alpha particles. observations of scattering experiment: most of the alpha particles passed straight without any deflection. a small fraction of the alpha particles were deflected at small angles, while few were deflected at large angles. a very few alpha particles were bounced back on the gold foil. results of scattering experiment: most of the space in an atom is empty because most of the positively charged alpha particles passed through the foil are undeflected. a few positively charged alpha particles are deflected due to a heavy positive centre in the atom. a very few alpha particles are bounced back because the nucleus is very hard and dense. the volume occupied by the nucleus is negligibly small..

State the postulates of daltons atomic theory ?

Describe JJ Thomson experiments on discovery of electrons .

List out the characters of anode rays.

Describe Rutherford model of an atom

Describe the properties of cathode rays

State the conclusion drawn by Alpha ray scattering experiment of Rutherford

___ thin foil was used by Rutherford for a l p h a - scattering experiment.

In Rutherford alpha-scattering experiment, a foil of ____________ was used.