What is the name of the ion with a charge of -1?

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SSC CGL 2024 Tier-II Official Paper-I (Held On: 18 Jan, 2025)
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  1. Cation
  2. Monovalent ion
  3. Polyvalent ion
  4. Anion

Answer (Detailed Solution Below)

Option 4 : Anion
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The correct answer is Anion.

Key Points

  • An ion with a charge of -1 is called an anion.
  • Anions are formed when an atom gains one or more electrons, resulting in a net negative charge.
  • Common examples of anions include chloride (Cl-), bromide (Br-), and iodide (I-).
  • Anions play crucial roles in various chemical reactions and are essential in maintaining the charge balance in compounds.

Additional Information

  • Cation
    • A cation is an ion with a positive charge.
    • Cations are formed when an atom loses one or more electrons.
    • Examples include sodium (Na+), calcium (Ca2+), and potassium (K+).
  • Monovalent Ion
    • A monovalent ion has a charge of +1 or -1.
    • Examples include hydrogen ion (H+) and fluoride ion (F-).
  • Polyvalent Ion
    • A polyvalent ion has a charge greater than +1 or -1.
    • Examples include sulfate (SO42-) and phosphate (PO43-).
  • Ions in Chemical Reactions
    • Ions are essential in the formation of ionic compounds.
    • Ionic bonds are formed through the electrostatic attraction between cations and anions.
    • Understanding ions is crucial for studying electrochemistry and various biological processes.
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