Year 12s: what will be the first way you research your future options? >>

Year 12s: what will be the first way you research your future options? >>

Year 12s: what will be the first way you research your future options? >>

Deducing the charge of an ion.

I'm on holidays at the moment and I'm starting my first chemistry class tomorrow. I've done all of the holiday homework except for just ONE thing.
"In each of the following compounds, deduce the charge on the ion shown in bold type".

Example Q's;

Ni2(SI4)3
K2MnO4

Please, please, please help me.

OP

Please anyone...?

The first one is quite bizarre - I would guess that Ni has an oxidation state of 3+ (it can't be 1, 2, or 4 other wise there would be fractional charges on the anions)

K2MnO4, K is +1, O is -2 leaving Mn as 6+

Couldn't it be a mixed oxidation state in the first one? I guess that's a little complicated for A level.

Kyle_S-C

Couldn't it be a mixed oxidation state in the first one? I guess that's a little complicated for A level.

Yeah, it's possible I've never encountered SI4 before (it could even be made up?) and so it's my best guess rather than a definitive answer :p:

:p:

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