OCR GCSE Combined Science A · J250
Specification C3.1a · Chemistry Paper 1
Revise: Formulae of Elements and CompoundsA compound ion is a charged group of bonded atoms.
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GCSE Combined Science · key term
A charged group of covalently bonded atoms, such as the nitrate ion, .
Used by OCR
Specification C3.1a · Chemistry Paper 1
Revise: Formulae of Elements and CompoundsA compound ion is a charged group of bonded atoms.
Put brackets around a compound ion only when more than one is needed. Never change the subscripts within the ion itself.
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