It was not a conclusion because it is neutral. It is not positive nor negative.

Rutherford’s gold foil experiment showed that the atom is mostly empty space with a tiny, dense, positively-charged nucleus. Based on these results, Rutherford proposed the nuclear model of the atom.

The gold foil experiment led to the conclusion that each atom in the foil was composed mostly of empty space because most alpha particles directed at the foil 1) An atom is mostly empty space with a dense, positively charged nucleus.

From the location and number of α-particles reaching the screen, Rutherford concluded the following: i) Almost 99% of the α-particles pass through the gold foil without any deflection. So atom must be having a lot of empty space in it. ii) Several α-particles get deflected at angles.

Answer: Very few of bombarded α-particles on gold foil were deflected by sharp angles and therefore, it was concluded that the positive charge is concentrated in a very small volume of the atom called nucleus. Since few were deflected, the size of the nucleus is very small as compared with atom size.

The only wrong statement is (c), as we cannot cite any reasons why a particle would not be able to pass through such a thin foil. Rutherford has also not observed anything like this in his experiment.

1. He observed that most of the alpha rays that were passed through the thin gold foil passed through it without showing any deflection which led him to the conclusion that most of the space in an atom is empty.

Observations of Rutherford’s scattering experiment: Most of the fast moving α-particles passed straight through the gold foil. Some of the α-particles were deflected by the foil by small angles. Surprisingly one out of every 12,000 alpha particles appeared to rebound.

Answer: The three observations made by Rutherford on his Alpha particle scattering experiment are as follows : 1)Most of the fast moving alpha particles passed straight through the gold foil. 2)Some of the alpha particles were deflected by the foil by small angles.

Rutherford and coworkers were able to demonstrate that the alpha particle was an atom of helium (later to be determined to be a nucleus of helium), and that helium gas would accumulate or be entrapped in minerals that contained radium.

Alpha particles (a) are composite particles consisting of two protons and two neutrons tightly bound together (Figure 1). They are emitted from the nucleus of some radionuclides during a form of radioactive decay, called alpha-decay.

If Rutherford shot negative particles, most of them would have passed through with small deflection from the sparsely scattered electrons going around…

if rutherford had taken beta particles instead of alpha particles in his model of atomic theory. then what would happen ? If he had used the beta particles, the beta prticles would have gone through the gold sheet as the beta particles are 100 times more penetrating than alpha particles.

The alpha particles were detected as small flashes on a fluorescent screen. Geiger and Marsden counted the flashes as they looked down a telescope tube at the screen….How he knew.

Rutherford used gold for his scattering experiment because gold is the most malleable metal and he wanted the thinnest layer as possible. The gold sheet used was around 1000 atoms thick. Therefore, Rutherford selected a Gold foil in his alpha scatttering experiment.

Alpha radiation is another name for the alpha particles emitted in the type of radioactive decay called alpha decay. Alpha particles are helium-4 (4He) nuclei.