The electrons may be thought of as moving in definite shells, or orbits, much as the planets have definite paths around the sun. An atom is most stable when its outer, or valence, shell contains as many electrons as it can hold. ... In the diagram the hydrogen atoms each share one electron with the nitrogen atom, thus completing their shells at two electrons and nitrogena#39;s valence shell at eight. H *. N : H *acanbsp;...
|Title||:||Merit Students Encyclopedia|
|Author||:||William Darrach Halsey|