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Chemical Bonding and Molecular Structure — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryChemical Bonding and Molecular Structure2 Marks
Question
Give correct reason for the following:
  1. $\text{BF}_3$ has a zero dipole moment although the $\text{B}-\text{F}$ bonds are polar.
  2. All carbon to oxygen bonds in $\text{CO}^{2-}_3$ are equivalent.
✓

Answer

  1. It is due to planar structure, individual dipoles get canceled.
  1. It is due to resonance, all $\text{C}-\text{O}$ bonds are equivalent.

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