Question

Pair (match) the name and formula for the following binary ionic compound.

The formula for manganese(II) chloride is
a) CuBr₂
b) MnCl₂
c) MgO
d) ZnF₂

Answer 1

The correct formula for manganese(II) chloride is b) MnCl₂. It reflects the proper combination of Mn²⁺ ions with Cl⁻ ions in a 1:2 ratio.

Step-by-step explanation:

The formula for manganese(II) chloride is b) MnCl₂. This compound is composed of Mn²⁺ ions and Cl⁻ ions, which combine in a 1:2 ratio to form the ionic compound MnCl₂. Let's check the learning by writing the formulas of other ionic compounds:

1. Chromium(III) phosphide is CrP.
2. Mercury(II) sulfide is HgS.
3. Manganese(II) phosphate is Mn₃(PO₄)₂.
4. Copper(I) oxide is Cu₂O.
5. Iron(III) chloride dihydrate is FeCl₃ · 2H₂O.
6. Chromium(VI) fluoride is CrF₆.

It is critical to understand both the charges of the ions involved and the principles of balancing charges when writing the formulas for ionic compounds.