Question

hii friend

explain :---- Rutherford scattering experiment ​

Answer 1

Answer:

Rutherford's alpha particle scattering experiment changed the way we think of atoms.

Before the experiment the best model of the atom was known as the Thomson or "plum pudding" model. The atom was believed to consist of a positive material "pudding" with negative "plums" distributed throughout.

Rutherford directed beams of alpha particles (which are the nuclei of helium atoms and hence positively charged) at thin gold foil to test this model and noted how the alpha particles scattered from the foil.

Rutherford made 3 observations:

•Most of the fast, highly charged alpha particles went whizzing straight through undeflected. This was the expected result for all of the particles if the plum pudding model was correct.

•Some of the alpha particles were deflected back through large angles. This was not expected.

•A very small number of alpha particles were deflected backwards! This was definitely not as expected. Rutherford later remarked "It was as incredible as if you fired a 15-inch shell at a piece of tissue paper and it came back at you!"

To explain these results a new model of the atom was needed.

In this model the positive material is concentrated in a small but massive (lot of mass - not size) region called the nucleus. The negative particles (electrons) must be around the outside preventing one atom from trespassing on its neighbours space to complete this model.

I hope this answers your question !

Answer 2

Rutherford gold foil scattering experiment :-:--------->

Experiment required

Source of alpha partical

very thin gold foil

Rutherford used a source which produce large amount of alpha ray and he bombarded it in the foil

Observation

• He observe that most of the ray is passes through the coil .
• Few ray follow perpendicular path.
• a ray come back with an angle of 180°.

Conclusion :-:------>

• He concluded that the there must be a place where same charge is present that's why the alpha partical returned in same path with 360°.

(like charge repel each other )

• He named that part as Nucleus and concluded that Nucleus is a place where large amount of positive partical is found .