Question

question 2. a team of chemists is cataloging binary ionic compounds for a laboratory database. some of the chemical formulas have been misplaced, and the correct formulas need to be matched with the compound names to complete the records. accuracy is critical for the database to function properly. match each compound name with its correct chemical formula by dragging and dropping the formula into the corresponding blank space.

name of the binary ionic compound | formula
--- | ---
lithium phosphide |
manganese(ii) oxide |

options: lip₂, li₃p₂, li₃p, lip₃, mno, mn₂o₂, mn₂o, mno₂

Explanation:

Step1: Analyze Lithium phosphide

Lithium (\(Li\)) has a charge of \(+1\) (group 1 metal). Phosphide is the anion of phosphorus, with a charge of \(-3\) (since phosphorus is in group 15, gains 3 electrons to form \(P^{3-}\)). To balance charges, we need 3 \(Li^+\) ions for 1 \(P^{3-}\) ion. So the formula is \(Li_3P\).

Step2: Analyze Manganese(II) oxide

Manganese(II) means \(Mn^{2+}\) (the Roman numeral II indicates a \(+2\) charge). Oxide is \(O^{2-}\) (group 16, gains 2 electrons). The charges are equal in magnitude (\(+2\) and \(-2\)), so we need 1 \(Mn^{2+}\) and 1 \(O^{2-}\) to balance. Thus, the formula is \(MnO\).

Answer:

• Lithium phosphide: \(Li_3P\)
• Manganese(II) oxide: \(MnO\)