" The electron revolves around the nucleus only the those orbits for which angular momentum is "

Why do the electrons revolve around the nucleus?

When an electron revolves around the nucleus, then the ratio of magnetic moment to angular momentum is

Derive an expression for the magnetic moment (vec mu) of an electron revolving around the nucleus in termsof its angular momentum (vecl) . What is the direction of the magnetic moment of the electron with respect to its angular momentum?

The angular momentum of an electron in a given stationary state can be expressed as m_(e)vr=n(h)/(2pi) . Based on this expression an electron can move only in those orbits for which its angular momentum is

For d electron, the orbital angular momentum is

For a d electron the orbital angular momentum is

For d-electrons, the orbital angular momentum is