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प्रश्न
In the ground state of ______ electrons are in stable equilibrium, while in ______ electrons always experience a net force.
विकल्प
Thomson’s model
Rutherford’s model
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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.
संबंधित प्रश्न
The size of the atom in Thomson’s model is ______ the atomic size in Rutherford’s model.
An atom has a nearly continuous mass distribution in a ______ but has a highly non-uniform mass distribution in ______.
Write two important limitations of Rutherford's nuclear model of the atom.
In a Geiger-Marsden experiment, calculate the distance of closest approach to the nucleus of Z = 80, when a α-particle of 8Mev energy impinges on it before it comes momentarily to rest and reverses its direction.
How will the distance of closest approach be affected when the kinetic energy of the α-particle is doubles?
Answer the following question.
Explain briefly how Rutherford scattering of α-particle by a target nucleus can provide information on the size of the nucleus.
Alpha particles used in Geiger-Marsden experiment were obtained from ______.
The model that best explains the results of Geiger-Marsden experiment is ______.
The first line of Balmer series (Hα) in the spectrum of hydrogen is obtained when an electron of hydrogen atom goes from ______.
If the radius of second electron orbit in hydrogen atom be r then the radius of the third orbit will be ______.
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 radius of electron's second stationary orbit in Bohr's atom is R. The radius of 3rd orbit will be:-
The ratio of the frequencies of the long wave length its of Lyman Balmer series of hydrogen spectrum is
In 88 Ra226 nucleus, there are
O2 molecule consists of two oxygen atoms. In the molecule, nuclear force between the nuclei of the two atoms ______.
The Bohr model for the H-atom relies on the Coulomb’s law of electrostatics. Coulomb’s law has not directly been verified for very short distances of the order of angstroms. Supposing Coulomb’s law between two opposite charge + q1, –q2 is modified to |F| = `(q_1q_2)/((4πε_0)) 1/r^2, r ≥ R_0 = (q_1q_2)/(4πε_0) 1/R_0^2 (R_0/r)^ε, r ≤ R_0` Calculate in such a case, the ground state energy of a H-atom, if ε = 0.1, R0 = 1Å.
The electron in a hydrogen atom is typically found at a distance of about 5.3 × 10−11 m from the nucleus which has a diameter of about 1.0 × 10−15 m. Assuming the hydrogen atom to be a sphere of radius 5.3 × 10−11 m, what fraction of its volume is occupied by the nucleus?
Differentiate between the 'distance of the closest approach' and the 'impact parameter.'
When alpha particles are sent through a thin gold foil, most of them go straight through the foil, because ______.
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°?
