Coordination number  [ENDORSED]

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Naana Boateng 1I
Posts: 58
Joined: Fri Sep 29, 2017 7:07 am

Coordination number

Postby Naana Boateng 1I » Fri Nov 24, 2017 5:19 pm

When finding the coordination number, do you have to always draw the lewis structure to find the number of bonds? or is there a simpler way?

Kourtney Nham 1L
Posts: 20
Joined: Fri Sep 29, 2017 7:04 am

Re: Coordination number

Postby Kourtney Nham 1L » Fri Nov 24, 2017 5:24 pm

Typically I look at the subscript on the ligand in the brackets (which indicates what is in the coordination sphere). For [Fe(CN)6]^4- and [CO(NH3)6]Cl2H2O, the coordination number is 6. For [Co(SCN)4]K2, the coordination number is 4.

Payton Schwesinger 1J
Posts: 45
Joined: Fri Sep 29, 2017 7:04 am

Re: Coordination number  [ENDORSED]

Postby Payton Schwesinger 1J » Mon Nov 27, 2017 2:14 pm

I think you just have to figure out how many bonds the central atom is going to have, either with individual molecules or with a compound (such as CN) , which you can usually do just by looking at the formula.

Dang Lam
Posts: 55
Joined: Thu Jul 27, 2017 3:01 am

Re: Coordination number

Postby Dang Lam » Mon Nov 27, 2017 8:03 pm

although there are other alternative ways to figure out coordination number, I personally think it is easier to draw the lewis structure to avoid careless mistakes


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