The noble gases are one of the better known groups of elements in the Periodic Table, and whilst some of their applications are obvious, such as the use of helium in balloons, others, such as the use of xenon in medical imaging and as a neuroprotector, or the use of helium as a carrier gas in gas chromatography, are a little more obscure
Lithium is found on the periodic table by group 1 and period 2 . In addition, it's family name is Alkali Metals. Some well known other members in this group are potassium and sodium. Family traits are they all include one valence electron and they have lower density's than other metals.