Textbook 9C.1

[Rachel Kho Disc 2G]

For example 9C.1a, why is it called iron ferrate if the overall complex is positive? Is it because iron itself is an exception like gold and silver and copper? Also, when do you know to add ‘ion’ at the end? I thought the rule was that if the overall compound was positive, then you would put ‘ion’ at the end. So why is ‘ion’ added to a) and c) then?

[Sara_Lim_2C]

The overall complex shown in 9C.1A has a negative 4- charge in my book. It's [Fe(CN)6]^4-. Were you looking at the right problem?

[Melanie Lin 3E]

Hi Rachel! Same as Sara, the coordination compound has an overall negative charge of -4 in my textbook. And to add, I'm pretty sure you can still call a negatively charged compound as an ion as well, not just positively charged. Hope this helps!