Homework Help: Chemistry

Posted by Miaow on Sunday, May 13, 2012 at 12:06pm.

Working on a practice question for finals so I really want to understand how this works:

What is the coordination number of mercury in K2[HgI4]?

I say that mercury's coordination number is 4 because I^- is a monodentate ligand.

Does the potassium affect the coordination number at all? Thanks for any insight.

Chemistry - DrBob222, Sunday, May 13, 2012 at 12:30pm
You are right. K has no effect on the coordination number; it simply is the other half of the "ionic" bond between K^+ and HgI4^2-
Chemistry - Miaow, Sunday, May 13, 2012 at 12:35pm
Thanks so much :)

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