Skip to main content
Glite Dictionary
🧪 H2 molecule ⚗️ With two hydrogens
dihydrogen

dihydrogen

1 6.9
A word part in chemical names that shows a compound has two hydrogen atoms
  • adjective
  • /daɪˈhaɪdrədʒən/
  • Specialized
: dihidrógeno
  • In chemistry class, we learned that dihydrogen sulfide contains two hydrogen atoms bonded to sulfur.

Examples

  • The solution was labeled as dihydrogen phosphate to indicate its chemical composition.

  • The prefix dihydrogen is used in compound names to show the presence of two hydrogens.

  • The compound contains dihydrogen and oxygen.

  • Water is made of dihydrogen and one oxygen atom.

  • The solution was labeled as dihydrogen phosphate to indicate its chemical composition.

  • In chemistry class, we learned that dihydrogen sulfide contains two hydrogen atoms bonded to sulfur.

  • The prefix dihydrogen is used in compound names to show the presence of two hydrogens.

Surface Forms

dihydrogen positive

Morphology

dihydrogen = hydrogen (transparent) = di + hydrogen

A standard numeric chemical prefix 'di-' meaning two is directly attached to the chemical name 'hydrogen', so the relation is straightforward.

Etymology

Dihydrogen breaks into clear parts: di- 'two' and hydrogen, which comes from hydro- 'water' and -gen 'maker'. So in chemical names, dihydrogen tells you there are two hydrogen atoms present, just like dioxide shows two oxygens.