Formulae for ionic compounds
1 mark · NormalWhat is the formula for copper(II) nitrate?
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Correct option: Cu(NO3)2
Common mistakes: missing brackets; wrong order of ions
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Marking points
A1 · 1 mark · Correctly selects Cu(NO3)2.
Worked solution
Copper(II): Cu2+; nitrate: NO3–; need two nitrates, so Cu(NO3)2.