What determines the size of an ion in an octahedral complex?

[lord12]

An an octahedral complex with all strong field ligands, which ion has the larger radius, Fe2+ or Co2+? What are the rules for known the size of the ion with respect if its a weak or strong field ligand?

 

[Gokul43201]

Please read the guidelines for posting in this sub-forum. We can not help you unless you first show us what your thoughts on the question are.