# Explain the Important Aspects of Resonance with Reference to the Co Ion. - Chemistry

Explain the important aspects of resonance with reference to the CO_3^(2-) ion.

#### Solution 1

Resonance in CO_3^(2-), I, II and III represent the three canonical forms.

• In these structures, the position of nuclei are same.
• All the three forms have almost equal energy.
• Same number of paired and impaired electrons, they differ only in their position.

#### Solution 2

According to experimental findings, all carbon to oxygen bonds in  CO_3^(2-) are equivalent. Hence, it is inadequate to represent  `CO_3^(2-)ion by a single Lewis structure having two single bonds and one double bond.

Therefore, carbonate ion is described as a resonance hybrid of the following structures

Concept: Bond Parameters - Resonance Structures
Is there an error in this question or solution?

#### APPEARS IN

NCERT Class 11 Chemistry
Chapter 4 Chemical Bonding and Molecular Structure
Q 11 | Page 130