Question

3 multiple choice 10 points supply the name for fe(oh)2 iron (i) hydroxide iron (ii) hydroxide iron hydroxide iron dihydroxide 4 multiple choice 10 points supply the name for na2o sodium (i) oxide disodium monoxide sodium (ii) oxide sodium oxide

Explanation:

In naming ionic compounds, for compounds with transition - metals like iron in Fe(OH)₂, we use Roman numerals to indicate the oxidation state of the metal. Iron has an oxidation state of +2 in Fe(OH)₂, so it is named iron (II) hydroxide. For Na₂O, sodium is a main - group metal with a fixed oxidation state of +1, and we simply name it sodium oxide.

Answer:

1. B. iron (II) hydroxide
2. D. sodium oxide