Respuesta :
(1) equals then number of electrons is your answer. If it is not a charged ion (and an ion of argon is rare naturally) than the number of protons always equals the number of electrons.
(1) equals the number of electrons
Because in argon-40, its protons and electrons are both 18, while the neutrons are different.
Because in argon-40, its protons and electrons are both 18, while the neutrons are different.