Ad blocker interference detected!
Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers
Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.
An atom becomes an ion if it gains a charge, either positive or negative.
It does so by losing (becomes positive) or gaining (become negative) electrons in its outermost electron shell. (Which is also why noble gases rarely have a charge)