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प्रश्न
What is the energy of an electron in a hydrogen atom for n = ∞?
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उत्तर
The energy of an electron in a hydrogen atom for n = ∞ is zero.
संबंधित प्रश्न
Answer in brief.
State the postulates of Bohr’s atomic model.
Answer in one sentence:
Name the element that shows the simplest emission spectrum.
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 ______
The speed of electron having de Broglie wavelength of 10 -10 m is ______
(me = 9.1 × 10-31 kg, h = 6.63 × 10-34 J-s)
The linear momentum of the particle is 6.63 kg m/s. Calculate the de Broglie wavelength.
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.
Using de Broglie’s hypothesis, obtain the mathematical form of Bohr’s second postulate.
The angular momentum of an electron in the 3rd Bohr orbit of a Hydrogen atom is 3.165 × 10-34 kg m2/s. Calculate Plank’s constant h.
Calculate the wavelength for the first three lines in the Paschen series.
(Given RH =1.097 ×107 m-1)
State the postulates of Bohr’s atomic model. Hence show the energy of electrons varies inversely to the square of the principal quantum number.
Bohr model is applied to a particle of mass 'm' and charge 'q' is moving in a plane under the influence of a transverse magnetic field 'B. The energy of the charged particle in the nth level will be (h = Planck's constant).
With the increase in principal quantum number, the energy difference between the two successive energy levels ____________.
Which of the following statements about the Bohr model of the hydrogen atom is FALSE?
When the electron in hydrogen atom jumps from fourth Bohr orbit to second Bohr orbit, one gets the ______.
If the ionisation potential of helium atom is 24.6 volt, the energy required to ionise it will be ____________.
In Bohr's model of hydrogen atom, the period of revolution of the electron in any orbit is proportional to ______.
Which of the following models was successful in explaining the observed hydrogen spectrum?
The time of revolution of an electron around a nucleus of charge Ze in nth Bohr orbit is directly proportional to ____________.
In Bohr's model of hydrogen atom, which of the following pairs of quantities are quantized?
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 ____________.
An electron makes a transition from an excited state to the ground state of a hydrogen like atom. Out of the following statements which one is correct?
The relation between magnetic moment of revolving electron 'M' and principle quantum number 'n' is ______.
Which of the following series of transition of hydrogen spectrum falls in visible region?
The value of Rydberg constant in joule is ______.
The triply ionised beryllium (Be+++) has the same electron orbital radius as that of the ground state of the hydrogen atom. The energy state (n) of triply ionised beryllium is ______.
(Z for beryllium = 4)
Ultraviolet light of wavelength 300 nm and intensity 1.0 Wm−2 falls on the surface of a photosensitive material. If one percent of the incident photons produce photoelectrons, then the number of photoelectrons emitted from an area of 1.0 cm2 of the surface is nearly ______.
What is the origin of spectral lines? Obtain an expression for the wave number of a line in hydrogen spectrum.
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)`.
Compute the shortest and the longest wavelength in the Lyman series of hydrogen atom.
