Home
Class 11
CHEMISTRY
The speed of the electron in the Ist orb...

The speed of the electron in the Ist orbit of the hydrogen atom in the ground state is (c is the velocity of light):c 1/1.37 c/ 1370 c/ 13.7 c/ 137

A

`(c )/(1.37)`

B

`(c )/(1370)`

C

`(c )/(13.7)`

D

`(c )/(137)`

Text Solution

Verified by Experts

The correct Answer is:
D
Velocity of electron in the first orbit, `upsilon =h//(2pi mr)=2.189xx10^(8) cm//sec`.
Velocity of light, `c=3xx10^(10) cm//sec`. Ratio `c//upsilon=137`
Promotional Banner

Similar Questions

Explore conceptually related problems

If the speed of electron in the Bohr's first orbit of hydrogen atom be x, then the speed of electron in second orbit of He^(+1) is

The total energy of an electron in ground state of hydrogen atom is -13.6eV. What is the signifi cance of negative sign?

The total energy of an electron in the ground state of a hydrogen atom is -13.6 eV. : What do you mean by ground state of a hydro gen atom ?

What is the energy in joules required to shift the electron of the hydrogen atom from the first Bohr orbit to the fifth Bohr orbit and what is the wavelength of the light emitted when the electron returns to the ground state? The ground state electron energy is -2.18xx10^(-11) ergs. (1erg=10^(-7)J)