NOBLE GASES
elements in the noble gases
helium
neon
argon
krypton
xenon
radon
oganesson
physical properties
- colourless
- odourless
- tasteless
- non-flammable
- generally non-reactive
- low melting points (highest -71°c , lowest -272°c)
- low boiling points (highest -62°c , lowest -268°c)
The outermost shell of noble gas atoms are full, so do do not have tendencies to react and bond with other atoms. This makes them extremely stable atoms, and are known as 'monoatomic'.