Why is magnesium oxide written MgO rather than Mg2O2?
Ionic formulae use the simplest whole-number ion ratio.
Ionic formulae use the actual number of ions present.
Ionic formulae use the relative masses of the ions.
Ionic formulae use an equal number of each ion.
Flashcards for Edexcel AS Level Chemistry Formulae and equations, covering the key terms and definitions you need to recall. 23 cards, matched to the Edexcel AS Level Chemistry (8CH0) specification.