➕Cation vs Anion➖
Ions come in two charges. Whether an atom loses or gains electrons decides if it becomes a cation or an anion.
Run a moomz poll: who wins for you?
moomz.com — 10s, anonymous, free
➕Cation
- ✓Positively charged ion
- ✓Formed by losing electrons
- ✓More protons than electrons
- ✓Usually formed by metals
- ✓Examples: Na+, Ca2+, Al3+
➖Anion
- ✓Negatively charged ion
- ✓Formed by gaining electrons
- ✓More electrons than protons
- ✓Usually formed by nonmetals
- ✓Examples: Cl-, O2-, S2-
Verdict
Cations are positive ions from losing electrons, typically metals; anions are negative ions from gaining electrons, typically nonmetals. Opposite charges attract to form ionic compounds.
Frequently asked
How do I remember the difference?+
A cation is positive, and anions are negative; metals form cations, nonmetals form anions.
Which way do ions move in a field?+
Cations move toward the cathode; anions move toward the anode.
What holds an ionic compound together?+
The electrostatic attraction between oppositely charged cations and anions.
Also in