Question

Explain the term anion with a suitable example.

Answer 1

• Ion:
  Ion, is any atom or group of atoms that bears one or more positive or negative electrical charges. Positively charged ions are called cations; negatively charged ions, are anions.
• Ions are formed by the addition of electrons to, or the removal of electrons from, neutral atoms.

Anion:

• Anions are negatively charged ions.
• They are formed when non-metal gains the electrons.
• They gain one or more than one electron and do not lose any protons.
• Therefore, they possess a net negative charge.
• Examples of anions are Iodide $\left({\mathrm{I}}^{-}\right)$, Chloride$\left({\mathrm{Cl}}^{-}\right)$, Hydroxide $\left({\mathrm{OH}}^{-}\right)$.