4/11/2016. There's no way I would ever rate a box store 5 stars, but I do like our Home Depot. The service isn't always the greatest, but it's usually pretty decent. The have a wide selection and the prices are generally the best in town.
Electrons with the highest energy levels exist in the outermost shell of an atom and are relatively loosely bound to the atom. This outermost shell is known as the valance shell and electrons in this shell are called valance electrons. A completed outermost shell has valance of zero.
At this configuration, electrons are at their the lowest energy level. This low energy level is called the Ground State. Atoms can absorb light energy and jump to a higher energy level. When they do so, they are said to be in an Excited state To do this