If an atom of titanium has the mass number of 49, then the atom is comprised of 49 protons and neutrons. Since it’s atomic number is 22, we know that it has 22 protons. This means that there are 27 neutrons in the nucleus (49-22).
If the atom is neutral, then the number of protons equals the number of electrons. Therefore, there are 22 electrons in a neutral titanium atom.
Protons: 22
Neutrons: 27
Electrons: 22
