What element has the symbol 'H'?

The story behind the answer

The symbol H stands for Hydrogen. The other options have distinct symbols: Helium is He, Hafnium is Hf, and Holmium is Ho, so only Hydrogen matches H.

Hydrogen is element number 1—the lightest and most abundant element in the universe—fueling stars through nuclear fusion. Its name comes from Greek roots meaning “water-former,” since it combines with oxygen to make H2O. Memory tips: think “H is the Head of the periodic table” and “H2O starts with H.” Also remember: Helium needs an extra “e” (He), while the longer element names Hafnium and Holmium keep their extra letters in their symbols (Hf, Ho).