The average distance of electron from the nucleus in an atom is of the order of

Which of the following quantum numbers relates to the average distance of an electron from the nucleus in a particular orbital?

The radius of an atomic nucleus is of the order of

The radius of an atomic nucleus is of the order of

The radius of an atomic nucleus is of the order of

In a hydrogen atom, the electron is at a distance of 4.76Å from the nucleus. The angular momentum of the electron is