Energy level or energy shells are the specific locations where the electrons revolve around
the nucleus. Each energy level is associated with specific amount of energy.
The outermost is most important because it is the one which accepts the electrons from outside the atom or looses the electron.
If you are referring to the valence shell; the answer is one.
Electron Shells
energy levels
Noble gases are very stable because their outermost electron shells contain the maximum number of electrons that those outermost shells can possess. This is a correct statement. Yes.
Radon has six electron shells.
Tungsten atoms contain six energy levels (shells). The outermost energy level is the sixth energy level. It has two electrons in the 6s sublevel.
Electron shells.
If you are referring to the valence shell; the answer is one.
Down a group, the number of energy levels (or shells) increases.
energy levels
Electron Shells
Copernicium has 7 electron shells.
Energy levels or energy shells or orbits
The electrons in actinium are disposed on seven energy levels.
Noble gases are very stable because their outermost electron shells contain the maximum number of electrons that those outermost shells can possess. This is a correct statement. Yes.
Actinium has seven electron shells.
Fermium has seven electron shells.