Rutherford's alpha-particle scattering experiment was responsible for the discovery of:a)Electronb)Protonc)Neutrond)Atomic NucleusCorrect answer is option 'D'. Can you explain this answer?

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Rutherford's alpha-particle scattering experiment was responsible for the discovery of:

a)
Electron
b)
Proton
c)
Neutron
d)
Atomic Nucleus

Correct answer is option 'D'. Can you explain this answer?

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Rutherford's alpha-particle scattering experiment was responsible for...

Rutherford designed alpha scattering experiment to know how the electrons are arranged within an atom. After the experiment, he concluded that:
- Most of the space inside the atom is empty as most of the alpha-particles passed through the gold foil without getting deflected.
- Very few particles were deflected from their path, indicating that the positive charge of the atom occupies very small space.
- A very small fraction of alpha-particle were deflected by 180 degree, indicating all the positive charge and mass of the gold atom were concentrated in a small volume within the atom.
On the basis of the observations, Rutherford put forward the nuclear model of an atom, which has following features:
- There is a positively charged centre in an atom called Nucleus. Nearly all the mass of an atom resides in the nucleus.
- The electrons revolve around the nucleus in well-defined orbits.
- The size of the nucleus is very small as compared to the size of the atom

Answered by Notes Wala · View profile

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