Question

how do you name anions?

Answer 1

If the anion contains an element plus oxygen they are named ...ate followed by the oxidation state of the non-oxygen element in roman numerals
e.g. SO4^2- is sulphate(VI), PO4^3- is phosphate(V), NO2^- is nitrate(III), ClO4^- is chlorate(VII)
If the anion contains an element other than oxygen, the name (and number of atoms of ) the element is added before the ..ate
e.g. BH4^- is tetrahydridoborate(III), AlH4^- is terahydridoaluminate(III
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Answer 2

Thank you:)