Louis de Broglie argued that electron in circular orbit as proposed by Bohr, must be seen as a Particle wave. From Bohr.s postulate of angular quantization mo mentum, arrive at an expression for wave length of an orbital electron.

According to Bohr atom model electrons are revolving in circular orbits around the nucleus. The movement of electrons can be regarded as a circular current flow. Then derive an expression for the magnetic dipole moment of an orbital electron.

According to de-Broglie.s explanation of Bohr.s second postulate of quantization, the standing particle wave on a circular orbit for n=4 is given by

Consider an electron in the n^th orbit of a hydrogen atom in the Bohr model. The circumference of the orbit can be expressed in terms of de Broglie wavelength of that electron as

De Broglie proposed the wave nature of electrons suggesting matter waves. Find the momentum, speed and De-Broglie wave length of an electron with Kinetic energy of 120 eV