Notes

The Properties of Helium in Group 18 Elements…

The most important properties for helium is this:
(i) Helium is also used in blimps and balloons.
(ii) Heat transfer agent in gas cooled nuclear reactors.
(iii) Helium is used as a component of breathing gases, replacing nitrogen.
(iv) Helium is also used along with other gases and phosphors, in neon lights.
(v) Helium is used to fill planes or aircraft.
(vi) Helium is a colourless, odourless, and tasteless gas.
(vii) Helium is the second lightest element after hydrogen.