FALL 2015 #4  [ENDORSED]

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FALL 2015 #4

Postby Michelle_Nguyen_3F » Fri Nov 11, 2016 10:01 pm

For the complex ions listed below, determine the oxidation state and the coordination number of the central metal ion?

I know that the oxidation state is +2, but I am confused on how to get the coordination number. I know that the number of bonds is equal to the coordination number. I thought the coordination number was 5, but I am incorrect. Could someone please explain why it is a different answer and how they came to that answer? Thank you!

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Re: FALL 2015 #4  [ENDORSED]

Postby Chem_Mod » Sat Nov 12, 2016 9:06 am

Remember in class I discussed that en is the notation used for ethylenediamine and that ethylenediamine is bidentate and forms two bonds via the lone pair on each N atom.
ethylenediamine = 2 bonds
each Cl- = 1 bond

This results in 6 bonds and a coordination number of 6.

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