In an atom the number of protons is always equal to
- In an atom the number of protons is always equal to the number of... what
- In an atom the number of protons is always equal to the number of neutrons
- The number of protons in an atom identifies it as an atom of a particular element
- In an atom the number of protons is equal to the number of electrons
- In an atom the number of protons equals the number of