He
Helium
He
1
  
 
Real, long lived, electronically neutral reagent chemical.

Gram formula weight (molecular mass) = 4.0026
Boiling point = -268.9 °C
Purity = 99 %
Solubility in organics = insoluble


Wikipedia Page:

Helium
is defined with respect to the entities below:
The entities below are defined with respect to:
Helium
Inert (generic)


Main group element (generic)


Molecular material (generic)


Mono-bond type material (generic)


Noble gas (generic)


Period 1 element (generic)


s-HOMO Lewis base (generic)


chemical compound molecule metal molecular science reaction mechanism ionic material acid base geometry reactivity synthesis science knowledge chemistry Lewis