Write the coordination number and geometry for [Co(H2O)6]I3.

Answer 1

In the complex ion [Co(H₂O)₆]³⁺, cobalt (Co) is surrounded by six water molecules (H₂O).

• Coordination Number: The coordination number is 6, as there are six water molecules coordinating with the cobalt ion.

• Geometry: The geometry of the complex is octahedral, which is typical for coordination compounds with a coordination number of 6.

So, for [Co(H₂O)₆]I₃, the coordination number is 6 and the geometry is octahedral.