what can be added to an atom to cause a nonvalence electron in the atom to temporarily become a valence…

what can be added to an atom to cause a nonvalence electron in the atom to temporarily become a valence electron?\nenergy\nmass\nneutrons\nelectrons

what can be added to an atom to cause a nonvalence electron in the atom to temporarily become a valence electron?\nenergy\nmass\nneutrons\nelectrons

Answer

Brief Explanations:

Adding energy can excite an electron to a higher - energy level. If a non - valence electron is excited to the outermost shell, it can temporarily become a valence electron. Mass, neutrons, and adding electrons do not directly cause this transition in the described way.

Answer:

energy