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प्रश्न
The radii of Bohr orbit are directly proportional to ______
विकल्प
Principal quantum number
Square of principal quantum number
Cube of principal quantum number
Independent of principal quantum number
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उत्तर
The radii of Bohr orbit are directly proportional to the Square of principal quantum number.
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संबंधित प्रश्न
Answer in brief.
State the postulates of Bohr’s atomic model.
According to Bohr's second postulate, the angular momentum of the electron is the integral multiple of `h/(2pi)`. The S.I unit of Plank constant h is the same as ______
For the hydrogen atom, the minimum excitation energy ( of n =2) is ______
What is the energy of an electron in a hydrogen atom for n = ∞?
State any two limitations of Bohr’s model for the hydrogen atoms.
Using de Broglie’s hypothesis, obtain the mathematical form of Bohr’s second postulate.
Calculate the longest wavelength in the Paschen series.
(Given RH =1.097 ×107 m-1)
The magnifying power of a telescope is high, if its objective and eyepiece have respectively ____________.
The ratio of speed of an electron in the ground state in the Bohr's first orbit of hydrogen atom to velocity of light (c) is ____________.
(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 total energy of an electron in an atom in an orbit is -3.4 eV. Its kinetic and potential energies are, respectively ______.
In Bohr's model of hydrogen atom, the period of revolution of the electron in any orbit is proportional to ______.
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 ______.
In hydrogen emission spectrum, for any series, the principal quantum number is n. Corresponding maximum wavelength λ is ______.
(R = Rydberg's constant)
In hydrogen spectnun, the wavelengths of light emited in a series of spectral lines is given by the equation `1/lambda = "R"(1/3^2 - 1/"n"^2)`, where n = 4, 5, 6 .... And 'R' is Rydberg's constant.
Identify the series and wavelenth region.
The de-Broglie wavelength of an electron in 4th orbit is ______.
(r = radius of 1st orbit)
The radius of orbit of an electron in hydrogen atom in its ground state is 5.3 x 10-11 m After collision with an electron, it is found to have a radius of 13.25 x 10-10 m. The principal quantum number n of the final state of the atom is ______.
Which of the following series of transition of hydrogen spectrum falls in visible region?
The speed of an electron in ground state energy level is 2.6 × 106 ms-1, then its speed in third excited state will be ______.
In Bohr’s atomic model, speed and time period of revolution of an electron in n = 3 level are respectively.
Show that the angular speed of an electron in the nth Bohr orbit is w = `(πme^4)/(2ε_0^2h^3n^3)` and the corresponding frequency of the revolution of the electron is f = `(me^4)/(4ε_0^2h^3n^3)`.
