Sapling Question 2

[Kaili Valenzuela 2B]

Hi! I'm having trouble figuring out this question. I thought the coordination number corresponded to the subscripts within the brackets?
Classify each of the coordination compounds according to the coordination number.

[tamara masri_3D]

Hi! The coordination number is the number of bonds formed by the metal. it's important to remember that most (if not all) of the ligands in this problem are monodentate so it wouldn't exactly be the subscripts in the brackets, but the number of ligands bonding to one metal molecule (for polydentate ligands, this would be a little more complicated because each ligand can be responsible for creating multiple bonds with the metal). Hope this helps!

[Anh Trinh 1J]

Adding on to this, the subscript outside of the bracket does not count. So in Ba[FeBr4]2, the coordination number is 4.

[Chelsea_Guzman_3C]

^That tip is very helpful, I was able to solve this question in 2 attempts. The subscripts inside the brackets are the only ones to take into consideration.

[Rio Gagnon 1G]

The coordination number refers to the number of ligands/bonds between the central metal and the atoms/molecules surrounding it. Because the compounds in this question are monodentate, counting the subscripts should work, but the subscripts outside of the brackets (outside of coordination sphere) do not count towards the coordination number.