Which Lewis structure below for (CO₃)^{2 -} obeys the octet rule for every atom in the structure and uses the proper number of valence electrons?

Question

Quizplus · Accepted Answer

The only Lewis structure that obeys the octet rule for every atom and uses the proper number of valence electrons is choice C. This structure has all atoms with complete octets, including the sulfur atoms with a double bond to oxygen and a single bond to phosphorous. Additionally, the lone pairs on each oxygen atom add up to the correct number of valence electrons. Choices A, B, D, and E all have at least one atom with an incomplete octet, violating the octet rule.

Which Lewis Structure Below for (CO3)2 - Obeys the Octet

Which Lewis Structure Below for (CO₃)^{2 -} Obeys the Octet