Advertisements
Advertisements
प्रश्न
Linear momentum of an electron in Bohr orbit of H-atom (principal quantum number n) is proportional to ______.
पर्याय
`1/n`
`1/n^2`
n
`n^2`
उत्तर
Linear momentum of an electron in Bohr orbit of H-atom (principal quantum number n) is proportional to `bbunderline(1/n)`.
Explanation:
Linear momentum, p = mv
Velocity of electron in Bohr's orbit is given as
`"v"=e^2/(2epsilon_0"nh")`
`therefore"mv"=e^2/(2epsilon_0"nh")`
`rArr"p"=(me^2)/(2epsilon_0"nh")`
`rArr"p"prop1/"n"`
APPEARS IN
संबंधित प्रश्न
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 ______
If aO is the Bohr radius and n is the principal quantum number then, state the relation for the radius of nth orbit of the electron in terms of Bohr radius and principal quantum number.
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)
State the postulates of Bohr’s atomic model. Hence show the energy of electrons varies inversely to the square of the principal quantum number.
Obtain an expression for wavenumber, when an electron jumps from a higher energy orbit to a lower energy orbit. Hence show that the shortest wavelength for the Balmar series is 4/RH.
How the linear velocity 'v' of an electron in the Bohr orbit is related to its quantum number 'n'?
When the electron in hydrogen atom jumps from fourth Bohr orbit to second Bohr orbit, one gets the ______.
How many moles of electrons are required for reduction of 9 moles of Cr3+ to Cr?
If the ionisation potential of helium atom is 24.6 volt, the energy required to ionise it will be ____________.
For an electron, discrete energy levels are characterised by ____________.
If m is mass of electron, v its velocity, r the radius of stationary circular orbit around a nucleus with charge Ze, then from Bohr's second postulate, the kinetic energy `"K.E." = 1/2"mv"^2` of the electron in C.G.S. system is 2 equal to ____________.
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 ______.
The time of revolution of an electron around a nucleus of charge Ze in nth Bohr orbit is directly proportional to ____________.
When an electron in hydrogen atom is excited from its 3rd to 5th stationary orbit, tbe change in angular momentum of electron is (Planck's constant: h = 6.62 x 10-34 Js) ____________.
Ratio of centripetal acceleration for an electron revolving in 3rd orbit to 5th orbit of hydrogen atom is ______.
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)
When an electron in a hydrogen atom jumps from the third orbit to the second orbit, it emits a photon of wavelength 'λ'. When it jumps from the fourth orbit to third orbit, the wavelength emitted by the photon will be ______.
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 ______.
The third line of the Balmer series, in the emission spectrum of the hydrogen atom, is due to the transition from the ______.
The momentum of an electron revolving in nth orbit is given by ______.
Which of the following series of transition of hydrogen spectrum falls in visible region?
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.
