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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
Incorrect statement when $C_2$ change to $C_2^{-2}$
  • A
    Magnetic properties remain same
  • B
    Bond order increases
  • C
    $\sigma $ bond decreases
  • ✓
    $\pi $ bond increases
✓

Answer

Correct option: D.
$\pi $ bond increases
d
$\mathop {{C_2}}\limits_{\left( {2\,\pi \,bond} \right)}  \to \mathop {C_2^{ - 2}}\limits_{\left( {2\pi  + 1 - bond} \right)} $

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