25th November 2019


What is the density of helium?

Chemical properties of helium - Health effects of helium
Atomic number2
Atomic mass4.00260 g.mol -1
Electronegativity according to Paulingunknown
Density0.178*10 -3 g.cm -3 at 20 °C
Melting point- 272.2 (26 atm) °C

Also asked, what is the molecular weight of helium gas?

Helium's atomic mass is 4.003, (carbon is 12.0107, oxygen is 15.9994). Multiply the atomic mass number by the molar mass constant (defined as 0.001 kg/mol. or 1 gram/mol.), thus making the molar mass 4.003 grams/mol.

What is the mass of one mole of helium?


What is the chemical formula of helium gas?

The chemical formula for helium is He. It is a noble gas with stable configuration 1s² and atomic number is 2. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas that heads the noble gas group in the periodic table.
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