How many protons does He2+ ion have?
He2+ ion has 2 protons.
Helium has 2 protons and 2 electrons, When it loses 2 electrons, it becomes Helium ion (also called alpha particle) or He2+.
Helium has 2 protons and 2 electrons, When it loses 2 electrons, it becomes Helium ion (also called alpha particle) or He2+.