Diatomic molecules include hydrogen H2, oxygen O2, nitrogen N2, chlorine Cl2, fluorine F2, bromine Br2 and iodine I2; these are homonuclear diatomic molecules because they contain the same atoms....
Firstly, compounds are not made of molecules. Molecules refer to compounds formed by the covalent bond between 2 or more atoms. However, if you were asking about substances made of molecules (e.g. a...
No elements can be made from molecules, because molecules are made from elements instead. If the question is really, "What elements normally occur in nature as diatomic molecules?", the answer is...
molecules are made up of atomsThere are monoatomic molecules as well. Helium is a monoatomic molecule. It produces a molecular ion in mass spectrometry.