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What is the formula of Ozone?
1. O
2. O4
3. O2
4. O3

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Correct Answer - Option 4 : O3

The correct answer is O3.

  • A chemical formula is an alphanumeric notation assigned to chemical compounds for their instant and swift representation and understanding.
  • Explanation:
    • Ozone is a protective layer that envelopes the earth's atmosphere.
    • Ozone is an allotrope of oxygen.
    • It is also represented and identified by the chemical formula O3.
    • It is composed of three oxygen atoms.
    • Ozone is responsible for shielding the earth from the harmful ultraviolet (UV) radiation emitted by the sun.

Symbol Name of compound
O Atomic oxygen
O2 Oxygen molecule
O3 Ozone
O4 Oxozone

  •  Ozone is formed in the atmosphere by the combination of atomic oxygen with an oxygen molecule.
    • Dissociation of an oxygen molecule in presence of sunlight, \(O_{2}+h\nu \rightarrow 2O\)
    • Combination of atomic oxygen and oxygen molecule, \(O_{2}+O \rightarrow O_{3} \)
  • Ozone can also be synthesized in a laboratory by using the electric discharge method.

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