Advertisements
Advertisements
Question
Find the angular momentum of an electron revolving in the second orbit in Bohr's hydrogen atom.
Advertisements
Solution
The angular momentum of an electron revolving around the nucleus in a hydrogen atom is quantised and given by
`L = (nh)/(2pi)` For n = 2
`L = (2h)/(2pi) = h/pi = (6.6 xx 10^-34)/3.14`
= `2.10 xx 10^34` kg m2s-1
APPEARS IN
RELATED QUESTIONS
In accordance with the Bohr’s model, find the quantum number that characterises the earth’s revolution around the sun in an orbit of radius 1.5 × 1011 m with orbital speed 3 × 104 m/s. (Mass of earth = 6.0 × 1024 kg)
The Bohr radius is given by `a_0 = (∈_0h^2)/{pime^2}`. Verify that the RHS has dimensions of length.
A neutron having kinetic energy 12.5 eV collides with a hydrogen atom at rest. Nelgect the difference in mass between the neutron and the hydrogen atom and assume that the neutron does not leave its line of motion. Find the possible kinetic energies of the neutron after the event.
The dissociation constant of a weak base (BOH) is 1.8 × 10−5. Its degree of dissociation in 0.001 M solution is ____________.
According to Bohr’s theory, the angular momentum of an electron in 5th orbit is ______.
In Bohr model of hydrogen atom, which of the following is quantised?
An electron in H-atom makes a transition from n = 3 to n = 1. The recoil momentum of the H-atom will be ______.
Oxygen is 16 times heavier than hydrogen. Equal volumes of hydrogen and oxygen are mixed. The ratio of speed of sound in the mixture to that in hydrogen is ______.
Write the ionisation energy value for the hydrogen atom.
Which from following is CORREСТ relationship between wavelength and momentum of electron?
