How did the gold foil experiment lead to the discovery of the nucleus?

Chemistry

1 answer:

makvit [3.9K]3 years ago

5 0

Answer:

Rutherford established the nuclear theory of the atom with his gold-foil experiment. When he shot a beam of alpha particles at a sheet of gold foil, a few of the particles were deflected. He concluded that a tiny, dense nucleus was causing the deflections.

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The stability of a nucleus is determined by the ratio of electrons to protons.

Lera25 [3.4K]

B. False
Stability is determined by the ratio of neutrons and protons. Electrons are not in nucleus.

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3 years ago

Inside stars in space, the nuclei of hydrogen atoms fuse together to form helium atoms. This represents which form of energy?

mixas84 [53]

Explanation:

When two small nuclei combine together to form a large nuclei then it is known as nuclear fusion.

When nuclei of two hydrogen atoms fuse together then it results in the formation of a helium atom along with the release of lot of energy. This energy is nuclear energy.

This nuclear reaction is as follows.

$^{2}_{1}H + ^{3}_{1}H \rightarrow ^{4}_{2}He + ^{1}_{0}n + Energy$

Thus, we can conclude that nuclear fusion represents nuclear energy.

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Answer:

Magnesium carbonate doesn't dissolve in water, only acid, where it will effervesce (bubble).

Explanation:

An insoluble metal carbonate reacts with a dilute acid to form a soluble salt. Magnesium carbonate, a white solid, and dilute sulfuric acid react to produce magnesium sulfate. Colourless magnesium sulfate heptahydrate crystals are obtained from this solution.

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A soccer player kicks a ball 6.5 meters. How much time is needed for the ball to travel this distance

Ahat [919]

It is 67 I think it is

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The energy of a photon needed to cause ejection of an electron from a photoemissive metal is expressed as the sum of the binding

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Answer:

$Binding\ energy=43.43\times 10^{-20}\ J$