Question

Which of the following statements are correct about carbonate ion 
A)The hybridization of central atom is SP3
 B)Its resonance structure has one C-O single bond and two C=O double bond 
C)The average formal charge on each oxygen atom is 0.67 units 
D)All C-OBond lengths are not equal​

Answer 1

Answer:

c

Explanation:

$\frac{2}{3} = 0.67$