When the same elements form compounds with different molecular forms, the compounds are known as isomers. (They may have different chemical properties.)
The name of a molecule with two sulfur atoms is "disulfur"
A combination of two atoms of different elements results in a molecule. A combination of two atoms of the same exact element results in two atoms of the same element stuck together, not a molecule. There is no name for this that I know of. --------- 1. Two oxygen atoms: a molecule of oxygen - O2. Many gases has diatomic molecules. Ozone has three oxygen atoms in molecule. 2. Allotropes can be formed from many atoms: allotropes of carbon, sulfur, phosphorus.
The water molecule (H2O) is formed from atoms of hydrogen (H) and oxygen (O).
Two or more atoms of similar or different types combine to form a molecule. So, a combination of two atoms of oxygen is a molecule and not an atom. Oxygen is the name for both an element and a molecule. The molecule contains two atoms with a molecular fromula, O2 and is a gas at room temperature. The element oxygen or O is unstable and highly reactive. It is formed only briefly in some reactions.
This sounds to me like you are wanting the term "molecule". A molecule is a group of atoms bonded together.
a molecule
atoms
a molecule
Dinitrogen tetroxide.
Chlorine is an element, not a compound. Moreover, its a diatomic molecule, that is, a molecule of chlorine contains two atoms of chlorine.
A molecule
The name of this combination is - molecule.