It is the substituent form obtained by removing one hydrogen atom attached to the terminal carbon of propane.

Natural gas is composed primarily of methane, a molecule with a carbon atom at its center and four hydrogen atoms attached.

For example, the two hydrogen atoms attached to the second carbon in butane are enantiotopic.

-Water is made of two hydrogen atoms attached to an oxygen atom.

Parent hydrides have a defined standard population of hydrogen atoms attached to a skeletal structure.

This nomenclature can also be applied to the hydrogen atoms attached to the carbons.

They all contain a carbon frame, and have hydrogen atoms attached to the frame.

In his model, the six carbon atoms of benzene form a hexagon with a hydrogen atom attached to every corner.

The next challenge was to substitute other atoms for the eight hydrogen atoms attached to cubane's corners.

The researchers made the molecule using dodecahedrane, which has the right 20-carbon structure as its core but comes with hydrogen atoms attached.