A zwitterion is a ion that has both a positive and a negative charge. To use it in a sentence, you might say that "a zwitterion is basically a hybrid ion that you may learn about when you study physics."

If is going to donate electrons

the ionized species or the zwitterion

Zwitterion - amino acids are the most common form of zwitterions. it basically means that the ion has two charged atoms that cancel each other out. Just look up zwitterion on wikipedia

An amphoion is another term for a zwitterion, a molecule such as an amino acid, which has both a positive and negative charge.