Hydrogen molecule in 3D
H₂ · The simplest common diatomic molecule. Hydrogen gas is used in ammonia production and can supply fuel cells. Explore the 3D model, inspect its parts and learn with guided explanations. Free on Atlas.
What you can learn
H₂ · The simplest common diatomic molecule. Hydrogen gas is used in ammonia production and can supply fuel cells.
Count the 2 atoms. Match their element colours to the formula H₂.
Select a bond and identify the two atoms it connects. Two hydrogen atoms share one electron pair in a single covalent bond. Each hydrogen contributes one electron in this simple picture.
Rotate the model to the side. Two hydrogen nuclei define a line. The displayed separation is schematic rather than a measured bond length.
Explain the difference between the atoms present and the molecule they form. An H atom and an H₂ molecule have different particle counts: the molecule contains two hydrogen nuclei.
Connect the model to daily life. Hydrogen gas is used in ammonia production and can supply fuel cells.
What is missing from a ball-and-stick picture? Consider electron density, movement and interactions with nearby molecules.
Try an investigation
Count the 2 atoms. Match their element colours to the formula H₂.
Check your understanding
How many atoms are in one H₂ molecule?
2. Add the atom counts in H₂: one molecule contains 2 atoms. Subscripts belong to the element or group immediately before them.
How many different elements make up H₂?
1. Hydrogen contains hydrogen. Count element types separately from the total atom count.
What shape describes H₂?
Linear. Two hydrogen nuclei define a line. The displayed separation is schematic rather than a measured bond length.
Which bond connects the atoms in H₂?
A single bond. Two hydrogen atoms share one electron pair in a single covalent bond. Each hydrogen contributes one electron in this simple picture.
How does H₂ differ from H?
H₂ contains two hydrogen atoms. An H atom and an H₂ molecule have different particle counts: the molecule contains two hydrogen nuclei.
What do the sticks in this hydrogen model represent?
Chemical connections between atoms. Ball-and-stick models help compare connections and spatial arrangement. Real molecules have electron distributions and vibrating nuclei, not coloured balls joined by rods.
Sources and model scope
A schematic two-atom layout; the displayed separation is not a measured bond length.