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4. Chemical bonding and molecular structure — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry4. Chemical bonding and molecular structure1 Mark
MCQ
The bond order in $CO_3^{2 - }$ ion between $C - O$ is
  • A
    $0$
  • B
    $0.88$
  • ✓
    $1.33$
  • D
    $2$
✓

Answer

Correct option: C.
$1.33$
(c) We know that carbonate ion has following resonating structures

Bond order $ = \frac{{{\rm{Total \,number\,of \,bonds \,between \,atoms}}}}{{{\rm{Total\, number\, of \,resonating \,structure}}}}$

$ = \frac{{1 + 1 + 2}}{3} = \frac{4}{3} = 1.33$.

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