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प्रश्न
In the ground state of ____________ electrons are in stable equilibrium, while in ____________ electrons always experience a net force. (Thomson’s model/Rutherford’s model)
उत्तर
In the ground state of Thomson’s model electrons are in stable equilibrium, while in Rutherford’s model electrons always experience a net force.
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संबंधित प्रश्न
Thorium 90Th232 is disintegrated into lead 82Pb200. Find the number of α and β particles emitted in disintegration.
An atom has a nearly continuous mass distribution in a ____________ but has a highly non-uniform mass distribution in ____________.
(Thomson’s model/Rutherford’s model)
Suppose you are given a chance to repeat the alpha-particle scattering experiment using a thin sheet of solid hydrogen in place of the gold foil. (Hydrogen is a solid at temperatures below 14 K.) What results do you expect?
Answer the following question, which help you understand the difference between Thomson’s model and Rutherford’s model better.
In which model is it completely wrong to ignore multiple scattering for the calculation of average angle of scattering of α-particles by a thin foil?
Write two important limitations of Rutherford's nuclear model of the atom.
An electron in an atom revolves round the nucleus in an orbit of radius r with frequency v. Write the expression for the magnetic moment of the electron.
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 ______.
The basic force acting on the alpha particles using Coulomb's law is ______.
The model that best explains the results of Geiger-Marsden experiment is ______.
For 7.7 Mev alpha particles scattering from aluminium (Z = 13), the distance of closest approach in a bead on collision is ______.
Useful data
`1/(4 pi ∈_0) = 8.99 xx 10^9` newton m2C-2; c = 1.60 × 10-19 C; leV = 1.60 × 10-19j.
In a capillary tube, water rises by 1.2 mm. The height of water that will rise in another capillary tube having half the radius of the first is:
The ratio of the frequencies of the long wave length its of Lyman Balmer series of hydrogen spectrum is
Which of the following transition in a hydrogen atom emit photon of the highest frequency:
O2 molecule consists of two oxygen atoms. In the molecule, nuclear force between the nuclei of the two atoms ______.
A narrow beam of protons, each having 4.1 MeV energy is approaching a sheet of lead (Z = 82). Calculate:
- the speed of a proton in the beam, and
- the distance of its closest approach
According to Bohr model, magnetic field at centre (at the nucleus) of a hydrogen atom due to motion of electron in the ninth orbit is proportional to:
Choose the correct option from the following options given below:
Differentiate between the 'distance of the closest approach' and the 'impact parameter.'
Determine the distance of the closest approach when an alpha particle of kinetic energy 3.95 MeV approaches a nucleus of Z = 79, stops and reverses its directions.
