Definition Of Element Helium
A chemical element of the noble gas group found especially in natural gases and used chiefly for inflating airships and balloons as a coolant for superconductors and as a component of inert atmospheres as in welding see chemical elements table examples of helium in a sentence.
Definition of element helium. It comes first amongst the family of the noble gases. The second most abundant element in the universe after hydrogen helium symbol he is a colorless odorless nonmetallic gas that is produced abundantly by the nuclear fusion in all stars and is found in smaller amounts on earth. Symbol he a colorless odorless inert gaseous element occurring in natural gas and with radioactive ores. The second lightest element only hydrogen is lighter helium is a colourless odourless and tasteless gas that becomes liquid at 268 9 c 452 f.
Helium is the element which you can find on the upper right side of the periodic table with atomic number 2. Definition of helium. Its abundance is similar to this in both the sun and in jupiter. Helium he chemical element inert gas of group 18 noble gases of the periodic table.
Helium is a very light gas that is colourless and has no smell. It is used as a component of artificial atmospheres and laser media as a refrigerant as a lifting gas for balloons and as a superfluid in cryogenic research. Helium is the second lightest and second most abundant element in the observable universe hydrogen is the lightest and most abundant. The boiling and freezing points of helium are lower than those of any other known substance.