Question

determine the name of the ionic compounds listed below with transition metals: 1. cuf 2. cuf₂ 3. pbi₂ 4. pbcl₄ 5. nio

Explanation:

For naming ionic compounds with transition - metals, we state the metal name first, then the non - metal name with its ending changed to 'ide'. For metals with multiple oxidation states, we use Roman numerals to indicate the charge of the metal ion.

1. In CuF, copper (Cu) is a transition metal. Fluoride has a charge of - 1. So copper has a + 1 charge. It is named copper(I) fluoride.
2. In CuF₂, fluoride has a - 1 charge. With two fluoride ions, copper has a + 2 charge. It is named copper(II) fluoride.
3. In PbI₂, lead (Pb) is a metal that can have multiple oxidation states. Iodide has a - 1 charge. With two iodide ions, lead has a + 2 charge. It is named lead(II) iodide.
4. In PbCl₄, chloride has a - 1 charge. With four chloride ions, lead has a + 4 charge. It is named lead(IV) chloride.
5. In NiO, nickel (Ni) is a transition metal. Oxide has a - 2 charge. So nickel has a + 2 charge. It is named nickel(II) oxide.

Answer:

1. Copper(I) fluoride
2. Copper(II) fluoride
3. Lead(II) iodide
4. Lead(IV) chloride
5. Nickel(II) oxide