Which is a element of the atoms

All the elements have atoms. and atoms have protons, neutrons and electrons 

An element of atoms is that they are composed of protons, neutrons, and electrons. The electrons circle around the nucleus, which is made of protons and neutrons, in orbitals. Atoms are the most basic building block of life. On another note, atoms make up elements and that element is made entirely of that one type of atom.

1. o2(g)as a product