INTEC Chemistry Blog

2.6 Redox

Posted by: intechemistry on: September 23, 2010

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2 Responses to "2.6 Redox"

Sir, in June 2010 Unit 2 paper Question 21 (b) (iii) regarding stating the oxidation state of NO and NO3-. It seems they are using +2 and +5 but there seems to be no provision for Roman Numerals. So which one should we write sir ? Thanks

ALWAYS USE ROMAN NUMERALS FOR Oxidation Numbers. It’s the correct thing to do.

They are simply being generous by accepting Latin script (or “English” style numbers).

It doesn’t matter if there appears to be no provision for them. The generosity they are showing automatically includes the correct use of the Roman numbers.

The risk is one day they may ‘tighten their belt’ and stop being so generous. Why play with fire?

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