The number of protons in an atom is also known as
- The number of protons in an atom is also known as its
- The number of protons in an atom is also known as the
- The number of protons found in an atom is also known as
- The number of protons in an atom's nucleus is also known as its number
- Atom made of
- The number of protons in an atom identifies it as an atom of a particular element
- The structure of atoms
- The number of protons in an atom is known as