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प्रश्न
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उत्तर
- The spectral lines of this series corresponds to the transition of an electron from a higher energy state to the 4th orbit.
For this series, p = 4 and n = 5, 6, 7, .... - The wave numbers and the wavelengths of the spectral lines constituting the Bracket series are given by
`barv = 1/lambda = R(1/4^2 - 1/n^2)`
These series lie in the near infrared region of the spectrum.
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संबंधित प्रश्न
Linear momentum of an electron in Bohr orbit of H-atom (principal quantum number n) is proportional to ______.
Answer in brief.
State the postulates of Bohr’s atomic model.
Derive the expression for the energy of an electron in the atom.
The radii of Bohr orbit are directly proportional to ______
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 ______
The linear momentum of the particle is 6.63 kg m/s. Calculate the de Broglie wavelength.
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)
Using the expression for the radius of orbit for the Hydrogen atom, show that the linear speed varies inversely to the principal quantum number n the angular speed varies inversely to the cube of principal quantum number n.
The radius of electron's second stationary orbit in Bohr's atom is R. The radius of the third orbit will be ______
Which of the following statements about the Bohr model of the hydrogen atom is FALSE?
For which one of the following, Bohr model is not valid?
In the nth orbit, the energy of an electron `"E"_"n"= -13.6/"n"^2"eV"` for hydrogen atom. The energy required to take the electron from first orbit to second orbit will be ____________.
According to Bohr's theory, the expression for the kinetic and potential energy of an electron revolving in an orbit is given respectively 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 ____________.
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?
The minimum energy required to excite a hydrogen atom from its ground state is ____________.
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 ____________.
In hydrogen atom, during the transition of electron from nth outer orbit to first Bohr orbit, a photon of wavelength `lambda` is emitted. The value of 'n' is [R =Rydberg's constant] ____________.
The de-Broglie wavelength of an electron in 4th orbit is ______.
(r = radius of 1st orbit)
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 momentum of an electron revolving in nth orbit is given by ______.
The value of Rydberg constant in joule is ______.
Calculate the energy of the electron in the ground state of the hydrogen atom. Express it in joule and in eV.
Calculate the radius of the first Bohr orbit in the hydrogen atom.
Find the ratio of radius of 1st Bohr orbit to that of 4th Bohr orbit.
