H on periodic table is for Hydrogen.It is the first and lightest element on periodic table.It combines with oxygen to form water.
Hydrogen.
Helium with an atomic number of 2,is the lightest gas on the periodic table :)
Helium with an atomic number of 2,is the lightest gas on the Periodic Table :)
helium
the element is Hydrogen
the lighest element is berrylium.
Helium is the lightest member in group 18.
Hydrogen.
the answer is Technetium
Helium is the lightest member in group 18.
who are you have you ever looked at the periodic table of elements? Hydrogen is the lightest element while helium is the second lightest element. No.