Edexcel IAL Chemistry AS 8.3 Roman numerals in chemical names
Edexcel IAL Chemistry AS 8.3 Roman numerals in chemical names
Calculate the central element's oxidation state from the formula and charge, then write that value as a Roman numeral rather than an ionic charge.
How this is tested
- Interpret a Roman numeral as the named element's oxidation number, not an ion charge.
- Name chlorate or sulfate species by calculating and writing the correct Roman numeral.