My educated guess should be the 3rd one
Start by adding the numbers then divide
U got kik?
lets talk first before we go any further
Adding or removing neutrons from the nucleus are how isotopes are created. Protons carry a positive electrical charge and they alone determine the charge of the nucleus. Adding or removing protons from the nucleus changes the charge of the nucleus and changes that atom's atomic number.
Answer:
its ability to lose electron
