Question

choose the name of a cubr₂ compound.
a copper bromine
b lithium iodide
c caesium oxide
d copper (ii) bromide

Explanation:

• Copper (Cu) is a transition metal. In naming its compounds, we need to indicate its oxidation state in Roman numerals.
• Bromine (Br) in the compound \(CuBr_2\) has an oxidation state of -1. Since there are two Br atoms, the total negative charge is -2. To balance this, Cu has an oxidation state of +2.
• The naming of ionic compounds: the metal (copper) is named first, then the non - metal (bromine) with its ending changed to “-ide”. And we include the oxidation state of the transition metal (copper (II)).

Answer:

d. Copper (II) Bromide