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प्रश्न
How is the size of a nucleus found experimentally? Write the relation between the radius and mass number of a nucleus.
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उत्तर
Nucleus: Through research on the scattering of α-particles by atoms, Lord Rutherford and his colleagues made the initial discovery of it in 1911. He discovered that the scattering finding could be explained if atoms were made up of an electron-orbiting small central massive and positive core. The findings of the experiment showed that the nucleus is 10,000 times smaller than an atom and has a size on the order of 10-14 metres. The number of protons and neutrons is given if the nucleus contains N neutrons.
A = Z + N
A → Mass Number
N →Neutrons
Z →Protons
Actually, the mass number is the integer closest to the nuclear mass.
संबंधित प्रश्न
Answer the following question, which help you understand the difference between Thomson’s model and Rutherford’s model better.
Is the average angle of deflection of α-particles by a thin gold foil predicted by Thomson’s model much less, about the same, or much greater than that predicted by Rutherford’s model?
Answer the following question, which help you understand the difference between Thomson’s model and Rutherford’s model better.
Is the probability of backward scattering (i.e., scattering of α-particles at angles greater than 90°) predicted by Thomson’s model much less, about the same, or much greater than that predicted by Rutherford’s model?
The total energy of an electron in the ground state of the hydrogen atom is -13·6 eV. Its total energy, when a hydrogen atom is in the first excited state, is ______.
Alpha particles used in Geiger-Marsden experiment were obtained from ______.
As compared to 12C atom, 14C atom has ______.
O2 molecule consists of two oxygen atoms. In the molecule, nuclear force between the nuclei of the two atoms ______.
Choose the correct option from the following options given below:
In the Rutherford experiment, α-particles are scattered from a nucleus as shown. Out of the four paths, which path is not possible?
Differentiate between the 'distance of the closest approach' and the 'impact parameter.'
During Rutherford’s gold foil experiment, it was observed that most of the α-particles did not deflect. However, some showed a deflection of 180°.
What hypothesis was made to justify the deflection of α-particle by 180°?
