Group 0

• The elements in group 0 of the periodic table are called noble gases.
• They are unreactive and do not easily form molecules because their atoms have stable arrangements of electrons
• The noble gases have eight electrons in their outer shell, except for helium, which has only two electrons
• The boiling point of the noble gases increases with the relative atomic mass, going down the group
• the noble gases have a full valance electron shell, which means they have eight electrons in their outermost energy level. This gives them a stable electron configuration and makes them chemically unreacactive.
• as you go down group 0, the relative atomic mass increases and the boiling point of noble gases also increases.