It is helium, specifically the helium-4 isotope, that is composed of two protons and two neutrons.
If you build an atom using two protons, two neutrons and two electrons you would build an atom of Helium. To be more-precise, this would create Helium-4 the common isotope of Helium.
protons and neutrons are located in the atom's nucleus.
Protons and neutrons are the two particles that are in the nucleus of an atom. Electrons orbit around the atom
Protons and Neutrons.
Two and two
The protons and neutrons of an atom are found in the nucleus of the atom.
In an atom protons and neutrons are located in the atomic nucleus.
The nucleus of a helium atom contains two protons and two neutrons.
the you and the stupid! oh wait that is the same thing!
The atom is composed of two parts, the nucleus, which contains the Protons and neutrons, and is positively charged; and the negative electrons surrounding it.
protons and neutrons
nucleus