Give the formula of each coordination compound. Include square brackets around the coordination complex. Do not include the oxidation state on the metal. Use parentheses only around polyatomic ligands.

sodium diamminedicarbonatoruthenate(III):
My answer: Na[Ru(NH3)_2(Co3)_2]

I need help with this one only. I labeled what my answer is above, but I keep getting it wrong.

1 answer

Maybe you don't need those underscores. And lose the Cobalt. Try
Na[Ru(NH3)2(CO3)2]