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BITSAT 2014
Exam
BITSAT
Year
2014
Subject
Chemistry
Chapter
Chemical Bonding and Molecular Structure

BITSAT 2014 · Chemistry · Chemical Bonding and Molecular Structure

N_ 2 and O_ 2 are converted into mono anions, N_ 2 ^ - and O_ 2 ^ -...

N2\mathrm{N}_{2} and O2\mathrm{O}_{2} are converted into mono anions, N2−\mathrm{N}_{2}^{-} and O2−\mathrm{O}_{2}^{-} respectively. Which of the following statements is wrong ?

Options

  1. AIn⁡N2\operatorname{In} \mathrm{N}_{2}, the N−N\mathrm{N}-\mathrm{N} bond weakens
  2. BIn O2\mathrm{O}_{2}, the O−O\mathrm{O}-\mathrm{O} bond order increases
  3. CIn O2,\mathrm{O}_{2}, bond length decreases
  4. DN2−\mathrm{N}_{2}^{-} becomes diamagnetic

Correct answer

B. In O2\mathrm{O}_{2}, the O−O\mathrm{O}-\mathrm{O} bond order increases

Step-by-step solution

We know that in O2\mathrm{O}_{2} bond, the order is 2 and in O2−\mathrm{O}_{2}^{-} bond, the order is 1.5. Therefore the wrong statements is (b).
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