Table of Anions - Negatively Charged Ions
Table of Anions - Negatively Charged Ions
Anions are negatively charged ions that can be classified into three categories based on their valency: monovalent, divalent, and trivalent. The following table summarizes important anions and their formulas:
Monovalent Anions (Charge = -1)
- Fluoride: F⁻
- Chloride: Cl⁻
- Bromide: Br⁻
- Iodide: I⁻
- Hydride: H⁻
Divalent Anions (Charge = -2)
- Oxide: O²⁻
- Sulphide: S²⁻
- Carbonate: CO₃²⁻
- Sulfite: SO₃²⁻
- Hydroxide: OH⁻
- Sulfate: SO₄²⁻
- Dichromate (VI): Cr₂O₇²⁻
- Hydrogen sulphate: HSO₄⁻
- Hydrogen carbonate: HCO₃⁻
- Nitrite: NO₂⁻
Trivalent Anions (Charge = -3)
- Nitride: N³⁻
- Phosphate: PO₄³⁻
- Nitrate: NO₃⁻
- Manganate (VII): MnO₄⁻
Notes on Anions:
- Valency: The valency of an anion indicates the number of electrons it can gain to achieve a stable electron configuration.
- Common Usage: Understanding the types and forms of anions is essential in various chemical processes, including acid-base reactions, precipitation reactions, and redox reactions. Anions play a critical role in biological systems and industrial processes as well.