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- Acid
- Acid anhydride
- Atomic Number
- Addition Polymer
- Addition Polymerization
- Alkane
- Alkane:Reactivity
- Alkene
- Alkyne
- Alcohol
- Amphoteric Oxide or Hydroxide
- Alkalis
- Absolute Temperature
- Atom
- Anode
- Anion
- Addition reaction
- Avogadro's number N
- Avogadro's law
- Atomic mass unit (a.m.u)
- Base
- Bond (Chemical)
- Basicity of an acid, monobasic, dibasic, tribasic
- Bronsted-Lowry's definition of acids and bases
- Boyle's law
- Catalyst
- Carbon-12 scale
- Cathode
- Cation
- Charle's law
- Combined gas equation
- Condensation Polymerization
- Compound
- Conductor (electrical)
- Covalent bond
- Coordinate bond
- Coulomb (C)
- Chemical reaction
- Cracking of alkanes
- Deliquescence
- Deposition
- Delocalized electrons
- Diatomic molecule
- Diffusion
- Dilute acid
- Dilution
- Exothermic reaction
- Endothermic reaction
- Equilibrium
- Efflorescent salt
- Enthalpy (ΔH) of reaction
- Electrolyte
- Electrolysis
- Electroplating
- Element
- Empirical formula
- Faraday's first law of electrolysis
- Formula equation
- Formula unit and formula mass
- Functional group
- Gay-Lussac's law
- Graham's law
- Half-life of radioactive decay
- Half-cell
- Halogenation
- Hard water
- Hardening of vegetable oil
- Hydrogen
- Hydrogen bond
- Hydrated salt
- Hydrocarbon
- Hydrogen ion as a proton
- Hygroscopic salt
- Ion
- Ionic Discharge
- Ionic or electrovalent bond
- Ionic migration
- Ionization energy
- Isotopes
- Le Chartelier's principle
- Markownikoff's rule
- Material
- Mineral
- Mixture
- Mole
- Molarity
- Molecule
- Neutralization
- Nuclear fission
- Relative Atomic Mass
- Radioactive decay
- Reduction
- Reduction half-cell
- Redox processes
- Radioactive Isotope
- Radioactivity
- Salt bridge
- Saturated hydrocarbons
- Substitution reaction
- Solvent
- Solute
- Solution
- Salt
- Solubility
- Soft water
- Structural formula
- Suspension
- Sublimation
- Substance:Chemical substance
- Strong acid
Anion
An anion is a negatively charged ion. Being negative, it moves to the anode (positive electrode) during electrolysis; so it is an anode ion.
Examples
Chloride ion, Cl-
Bromide ion, Br-
Hydroyl ion, OH-
Nitrate ion, NO3-
Sulphate ion, SO42-
Carbonate ion, CO32-
An anion may be stable or unstable, monovalent, divalent, or trivalent and so on.
OTHER TOPICS (FULL)
INTRODUCTION TO CHEMISTRY
SIMPLE CLASSIFICATION OF SUBSTANCES AND SEPARATION OF MIXTURES
ACIDS, BASES AND INDICATORS
AIR AND COMBUSTION
WATER AND HYDROGEN
STRUCTURE OF THE ATOM, AND THE PERIODIC TABLE
CHEMICAL FAMILIES AND PATTERNS IN PROPERTIES
CHEMICAL BONDING AND STRUCTURE
SALTS
EFFECT OF AN ELECTRIC CURRENT ON SUBSTANCES
CARBON AND SOME OF ITS COMPOUNDS