Home
Class 12
CHEMISTRY
The angular momentum of an electron in a...

The angular momentum of an electron in a Bohr's orbit of hydrogen atom is `4.2178 xx 10^(-34)kg m^(2) sec^(-1)`.Calculate the wavelength of the spectral line emitted when electron falls from this level to next lower level.

Text Solution

Verified by Experts

`mvr=(nh)/(2pi)`
`(nh)/(2pi)=4.2178xx10^(-34)`
`n=(4.2478xx10^(-34)xx2xx3.14)/(6.625xx10^(-34))=4`
`1/(lamda)=R[1/(n_(1)^(2)-1/(n_(2)^(2)))]`
The wavelength for transition from n=4 to n=3
`1/(lamda)=109678p[1/(3^(2))-1/(4^(2))]`
`lamda=1.8xx10^(-4)cm`
Promotional Banner

Similar Questions

Explore conceptually related problems

The angular momentum of electron in a Bohr's orbit of H atom is 4.2178 xx 10^(-34) kg m^(2)s^(-1) Calculate the wavelength of the spectral line when the electrton falls from this level to the next lower level

The angular momentum of electron in a Bohr's orbit of H atom is 4.2178 xx 10^(-34) kg m^(2)s^(-1) . Calculate the wavelength of the spectral line when the electrton falls from this level to the next lower level.

Calculate angular momentum of an electron in the third Bohr orbit of hydrogen atom.

Calculate the wavelength of the spectral line when an electron jumps from n=7 to n=4 level in an atom of hydrogen.

The angular momentum of an electron in a Bohr's orbit of He^(+) is 3.1652xx10^(-34) kg- m^(2) /sec. What is the wave number in terms of Rydberg constant (R ) of the spectral line emitted when an electron falls from this level to the first excited state.l [ Use h =6.626xx10^(-34) Js]

Find angular momentum of an electron when it is in the second Bohr orbit of hydrogen atom.

The wavelength of the radiation emitted when an electron falls from Bohr 's orbit 4 to 2 in H atom is

Calculate wavelength of photon emitted when an electron goes from n=3 to n=2 level of hydrogen atom.

The velocity of an electron in the first Bohr orbit of hydrogen atom is 2.19 xx 10^(6)ms^(-1) . Its velocity in the second orbit would be

Calculate the wavelength of a photon emitted when an electron in H- atom maker a transition from n=2 to n=1