Negative charge. Add Ate to the end

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Parsia Vazirnia 2L
Posts: 44
Joined: Fri Jul 22, 2016 3:00 am

Negative charge. Add Ate to the end

Postby Parsia Vazirnia 2L » Thu Nov 10, 2016 3:20 pm

So If a complex has a net negative charge, you would add ate at the end of the metal name. Can someone explain why for K3[CoF6] becomes potassium-hexa-flouro-cobaltate (III).Why are we adding "ate" to cobalt. Where does the negative charge come from?

HarshiniMuthukumar3N
Posts: 18
Joined: Wed Sep 21, 2016 2:56 pm

Re: Negative charge. Add Ate to the end

Postby HarshiniMuthukumar3N » Thu Nov 10, 2016 4:01 pm

Before adding the potassium, which is added to the compound to neutralize it, the compound has a charge of -3 which is why the -ate is added.

Josh_Zhong_1F
Posts: 34
Joined: Fri Sep 30, 2016 3:02 am

Re: Negative charge. Add Ate to the end

Postby Josh_Zhong_1F » Sat Nov 12, 2016 2:59 pm

Hi,

How do you know the compound has a negative has a charge of -3?

Alex Chen 1B
Posts: 24
Joined: Wed Sep 21, 2016 2:57 pm
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Re: Negative charge. Add Ate to the end

Postby Alex Chen 1B » Sat Nov 12, 2016 3:13 pm

Since you have 3 K+ cations, you have to balance the 3+ charge to get a neutral net charge. So the anion, which is the coordination compound in this case, has to have a charge of 3-.


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