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Chemical Bonding and Molecular Structure question

2023 · 25 Jan · Shift 1 · Q23
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Chemical Bonding and Molecular Structure question

2023 · 25 Jan · Shift 1 · Q23

JEE MainChemistryChemical Bonding and Molecular StructureNumerical+4 / −1
The total number of lone pairs of electrons on oxygen atoms of ozone is ‾\underline{\hspace{2cm}}​.
Numerical answer
View written solutionFree

Correct answer: 6

  1. Write the structure of ozone, O3\mathrm{O_3}O3​

    Ozone has resonance structures:

    O−−O+=O↔O=O+−O−\mathrm{O^- - O^+ = O} \quad \leftrightarrow \quad \mathrm{O = O^+ - O^-}O−−O+=O↔O=O+−O−

  2. Count lone pairs on each oxygen atom in one resonance form

    Consider:

    O−−O+=O\mathrm{O^- - O^+ = O}O−−O+=O
    • Singly bonded terminal oxygen O−\mathrm{O^-}O−: It has 3 lone pairs.
    • Central oxygen O+\mathrm{O^+}O+: It has 1 lone pair.
    • Doubly bonded terminal oxygen: It has 2 lone pairs.

  3. Total lone pairs

    3+1+2=63 + 1 + 2 = 63+1+2=6

  4. Final answer

    The total number of lone pairs of electrons on oxygen atoms of ozone is:

    6\boxed{6}6​

  5. Comparison with stored answer

    Stored correct answer = 6, which matches the derived answer.

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