Answer:
Cobalt (III) iodide CoI₃
Explanation:
The name of the compound formed between Cobalt(III) and Iodine is known as Cobalt (III) Iodide. 
- The Iodide ion gains three electrons from the cobalt
- They both an electrovalent compound when they react.
- This compound is soluble in water due to the ionic bonds. 
- Cobalt is a transition metal found in the d- block
- Iodide is a halogen that belongs to group 7.