What is the Most Likely Product of Decomposing a Carbonate?

[Teemo]

Homework Statement

http://i.imgur.com/Ypqcw19.png

Homework Equations

N/A

The Attempt at a Solution

Since the reaction involves the breaking of bonds in MCO₃, I assume we are looking at coulomb interactions. I'd think the answer is D) BaCO₃ because all the options have a 2+ charge, but barium has the largest radius.

 

[Bystander]

What are the products of the decomposition?

 

[Matternot]

Hopefully this link will help. Remember, you're not reacting atoms of the metal, but ions in a compound. It is also more difficult than thinking of which atom is easiest to oxidise. Both metals are oxidised on either side of the reaction.