Learn about interesting facts about Hydrogen, Helium, and Lithium.

Hydrogen
Category: non-metal
Atomic number: 1
Atomic weight: 1.00794
Phase: gas
Hydrogen is the most abundant element in the Universe, accounting for 88% of all atoms;…..

Helium
Category: noble gas
Atomic number: 2
Atomic weight: 4.002602
Phase: gas
Helium is name after the Greek God of the sun, Helios. It was detected as an unknown…

Lithium
Category: alkali metal
Atomic number: 3
Atomic weight: 6.941
Phase: solid
Lithium is the lightest and least dense solid element. This malleable silvery…..