GROUP 8 - created from Mind Map

known as noble gases

physical properties

chemical properties

the atom increase in size and mass

density increase as the mass of atoms increase

uses of noble gases

chemically unreactive

have full outer shell

exists as monoatomic gases(single atom)

size of atomic radius increase (electrons increase)

melting and boiling point increase (atomic size of element increase)

non metals

colourless gases and good conductor of electricity

unreactive(have stable outer shell)

the boiling point increase

helium is used to fill weather balloon

neon used in advertising board light

argon used to filled in electric bulb

krypton used in camera flashlight

xenon used in lighthouse lamp

radon used to treat cancer

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