Neither, it is a subatomic particle. An atom's nucleus is made up of protons and neutrons.
Radium is a chemical element; a compound has a minimum of two chemical elements.
A metal is a chemical element not a compound.
Wolfram is a chemical element.
No, salt is a chemical compound.
Iron is a chemical element.
Elements can not be broken down.
Magnesium is a chemical element, not a compound.
Copper is a chemical element. It can be a compound but copper is usually known as a chemical element.
Pb is a compound.
Radium is a chemical element; a compound has a minimum of two chemical elements.
Sodium is a chemical element. Salt is a compound of sodium and chlorine.
Neon (Ne) is a chemical element, not a compound.
Helium (He) is a chemical element, not a compound; the chemical symbol is He.
Francium is not a compound, but a chemical element.
Americium is not a compound, it is a chemical element.
A metal is a chemical element not a compound.
Xenon is a chemical element.