Hey. I am Sodium. I am a metal and I have, well,only 1 valence electron. Nice to meet you,....er?
Chlorine, I'm Chlorine. Pleasured to meet you, too. By the way, let me introduce myself. I am a nonmetal and have seven valence electrons.
Hey, I have an idea. How about we form an ionic bond? Both of us will have a full shell of valence electrons then.
Well, I will consider the idea if you are going to tell me what an ionic bond is.
Yeah, sure. So an ionic bond is when a nonmetal and a metal bond. In this bond, one atom will gain electron and the other will lose their electrons. So do you want to bond with me?
Ok. Why not? I am ready to bond. So who is going to gain and who is going to lose their valence electrons?
I am going to lose the one valence electron I have and give it to you. What you are going to do is to add the valence electron I gave you and keep it . Then both of us will have a full shell of valence electrons and we are going to be chemically stable as well.
Ok, that sounds like fun. I am on it.
After they were done bonding
Now I have a full valence electron shell. I am also positively charged , which is a cation.
Same here. But I am negatively charged but still, I have a full valence electron shell!
Two are always better than one . Especially in science. For example, in chemical bonding.