What is the number of valence electrons in this compound?

What is the number of valence electrons in this compound?
[Co(NH_3)_3Cl_3]

1 Answer
Jun 22, 2018

Well, [Co(NH_3)_3Cl_3] is an 18 electron complex...

Explanation:

You gots a Co^(3+) centre...that's "6 d-electrons", you got 3 ammonia donors...that's another 6 electrons...and another 3xxCl^- ligands, each of which donates TWO electrons....that is 18 electrons in total....

What geometric isomers can exist for this structure?