What is the approximate carbon-oxygen bond order in CO₃^2-? A)1 B)4/3 C)5/3 D)2

Question

Quizplus · Accepted Answer

The carbon-oxygen bond order can be calculated using the formula: 
Bond order = (number of bonding electrons - number of antibonding electrons)/2
Counting the electrons in the bonding and antibonding orbitals of the carbon-oxygen bond in COS1U1B13S1U1B0S1U1P12-S1S1P0, we get:
Bonding: 2 sigma bonds (from S1U1B13 and S1U1P12) and 1 pi bond (from S1U1B0)
Antibonding: 1 sigma antibonding from C
Therefore, bond order = (6-2)/2 = 4/2 = 2/3, which is closest to choice B (4/3).

What Is the Approximate Carbon-Oxygen Bond Order in CO32-

What Is the Approximate Carbon-Oxygen Bond Order in CO₃^2-