Elements normally do not form "molecules" apart from 3 gaseous elements which form diatomic molecules. However, Sulfur exists in molecules comprising 8 atoms, while Phosphorous exists as a 4 atom molecule.
No, iron is a metallic element and do not exists as molecules, macro molecules are those which contain thousands of atoms or molecules as a single unity as starch, proteins etc.
Helium is an element. It is a chemical element with the symbol He and atomic number 2. Helium exists as individual helium atoms, not molecules.
Ozone exists as triatomic molecules. O3
Atoms and molecules
12.044x10^[24] atoms
Oxygen is an element and so has its own unique type of atom. However, oxygen usually does not exists as individual atoms, but rather as O2 molecules, that is, molecules containing 2 oxygen atoms. O3 is another type of oxygen molecule know as ozone.
At standard temperature and pressure, nitrogen exists in molecules with two atoms each.
If you mean a substance made up of only one atom, that would be a mono-atomic element, and would be a noble gas.If you mean a substance made of only one kind of atoms, that would be an element.
No, iron is a metallic element and do not exists as molecules, macro molecules are those which contain thousands of atoms or molecules as a single unity as starch, proteins etc.
Both oxygen and nitrogen meet this description.
Helium is an element. It is a chemical element with the symbol He and atomic number 2. Helium exists as individual helium atoms, not molecules.
Ozone exists as triatomic molecules. O3
polymers
A mole is a counting unit of molecules. Since sodium is an element and is exists by itself one mole of sodium will equal one mole of atoms or 6.02 x 1023 atoms.
Carbon is not a molecule; it is an element. An element is a substance containing only one type of atom. Carbon molecules are collections of carbon atoms. No chemical element is "good" or "bad"; they just exist.
Helium does not form molecules but exists as individual atoms.
Boron