Sigma (σ) bonds are the single bonds in molecules. Also, recall that a double bond is composed of 1 σ bond and 1 π bond and a triple bond is composed of 1 σ bond and 2 π bonds.
σ (sigma) bond: A sigma bond is formed from the end-on overlap of orbitals (s–s, s–p, p–p, etc.).
π (pi) bond: A pi bond forms when two p orbitals overlap laterally or in a side-by-side fashion.
Draw the Lewis Structure of CO32−:
C Group 4A 4 valence e- x 1
O Group 6A 6 valence e- x 3
-2 charge + 2 e-
The electrons in the double bond (C=O) can move to the other C-O bond while maintaining the overall charge equal to -2.
Two types of bond: C=O and C-O
For the carbonate ion, CO32−, draw all of the resonance structures. Identify which orbitals overlap to create each bond.
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Our data indicates that this problem or a close variation was asked in Chemistry - OpenStax 2015th Edition. You can also practice Chemistry - OpenStax 2015th Edition practice problems.