Atomle Notation Atomic number = the number of protons in an element Atomic mass number the number of protons and the number of neutrons in an element added together The number of electrons in a neutral atom equals the number of protons in the atom Isotope - atoms of the same element with different mass Atomic notation is AtomicMassNumber AtomicNumber 22 Ti is the symbol for a titanium isotope with 25 neutrons, 22 protons , and 22 electrons. Titanium has 4 other isotopes: titanium-46, titanium-48, titanium-49, titanium-50 How many protons does each titanium isotope have? How many electrons does each titanium isotope have? How many neutrons does each titanium isotope have? Write the atomic notation for the other isotopes of titanium Zirconium (atomic number 40) has 4 isotopes: zirconium-90, zirconium-91, zirconium-92, and zirconium 94 How many protons does each zirconium isotope have? How many electrons does each zirconium isotope have? How many neutrons does each zirconium isotope have? Write the atomic notation for the isotopes of zirconium