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प्रश्न
What is the mathematical formula for the third postulate of Bohr's atomic model?
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उत्तर
The change in energy of an electron as it moves from one orbit to another is always accompanied by the emission or absorption of a photon.
E = En - Em
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संबंधित प्रश्न
Answer in brief.
State the postulates of Bohr’s atomic model.
What is the energy of an electron in a hydrogen atom for n = ∞?
Starting with 𝑟 = `(ε_0h^2n^2)/(pimZe^2),` Show that the speed of an electron in nth orbit varies inversely to principal quantum number.
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State the postulates of Bohr’s atomic model. Hence show the energy of electrons varies inversely to the square of the principal quantum number.
How the linear velocity 'v' of an electron in the Bohr orbit is related to its quantum number 'n'?
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(h = Planck's constant, ε0 = permittivity of free space, e = charge on electron)
If the ionisation potential of helium atom is 24.6 volt, the energy required to ionise it will be ____________.
What is the de Broglie wavelength of an electron of energy 180 eV?
(Mass of electron = 9 x 10-31 kg and Planck's constant = 6.6 x 10-34 Js.)
The binding energy of an electron in nth orbit of the hydrogen atom is given by `"E"_"n" = 13.6/"n"^2 "eV."` The energy required to knock an electron from the second orbit in eV will be ____________.
If the speed of an electron of hydrogen atom in the ground state is 2.2 x 106 m/s, then its speed in the third excited state will be ______.
Angular speed of an electron in the ground state of hydrogen atom is 4 × 1016 rad/s. What is its angular speed in 4th orbit?
In Bohr model, speed of electron in nth orbit of hydrogen atom is ______. (b = Planck's constant, n = principal quantum number, ∈0 is the permittivity of free space, e = electronic charge)
If a charge on the body is 1 nC, then how many electrons are present on the body?
If n is principal quantum number and r is the radius of the orbit in which electron revolves around nucleus, then its kinetic energy is ____________.
The de-Broglie wavelength of an electron in 4th orbit is ______.
(r = radius of 1st orbit)
If Vn and Vp are orbital velocities in nth and pth orbit respectively, then the ratio Vp: Vn is ______.
The relation between magnetic moment of revolving electron 'M' and principle quantum number 'n' is ______.
The ground state energy of the hydrogen atom is -13.6 eV. The kinetic and potential energy of the electron in the second excited state is respectively ______
The third line of the Balmer series, in the emission spectrum of the hydrogen atom, is due to the transition from the ______.
Which of the following series of transition of hydrogen spectrum falls in visible region?
Calculate the radius of the first Bohr orbit in the hydrogen atom.
What is the origin of spectral lines? Obtain an expression for the wave number of a line in hydrogen spectrum.
Compute the shortest and the longest wavelength in the Lyman series of hydrogen atom.
Find the ratio of radius of 1st Bohr orbit to that of 4th Bohr orbit.
