If, so, what bands are considered grunge metal?
Alkali metals have one electron in the outer shell. Alkaline earth metals have two electrons in the outer shell. If the period number + the number of elctrons required for a full shell </=7 the element is a non-metal. Metals which are not alkali, alkaline earth or 'rare' earth (57-71 and 89-103) are transition metals.
