An anion is a negatively charged ion formed when an atom gains one or more electrons. Anions are typically larger than their parent atoms due to the added electrons.
5 Must Know Facts For Your Next Test
Anions are formed by the gain of electrons.
Anions are attracted to the anode (positive electrode) in electrolysis.
Common examples of anions include Cl⁻, O²⁻, and SO₄²⁻.
Nonmetals tend to form anions because they have higher electronegativity.
The ionic radius of an anion is larger than its atomic radius.