Problem 9C.3 7th Edition

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Cecilia Jardon 1I
Posts: 74
Joined: Fri Sep 28, 2018 12:16 am

Problem 9C.3 7th Edition

Postby Cecilia Jardon 1I » Sat Dec 01, 2018 3:11 pm

The question asks to write the formula for potassium hexacyanidochromate(III). The answer is K3[Cr(CN)6]
I don't understand how potassium got to have the subscript 3. Can someone explain please.

Alyssa Wilson 2A
Posts: 65
Joined: Fri Sep 28, 2018 12:18 am

Re: Problem 9C.3 7th Edition

Postby Alyssa Wilson 2A » Sat Dec 01, 2018 3:15 pm

I believe potassium's oxidation state is 3, because the name of the element ends with the number 3, in roman numerals.


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