Question

decide whether each pair of elements in the table below will form an ionic compound. if they will, write the empirical formula and name of in the spaces provided.

Explanation:

Step1: Determine if ionic compound forms

Ionic compounds form between metals and non - metals. Barium (metal) and potassium (metal) → no (both metals). Fluorine (non - metal) and potassium (metal) → yes. Lithium (metal) and chlorine (non - metal) → yes. Oxygen (non - metal) and potassium (metal) → yes.

Step2: Write empirical formula and name

• Fluorine and potassium:
• Potassium forms \(K^{+}\), fluorine forms \(F^{-}\). Formula: \(KF\). Name: potassium fluoride.
• Lithium and chlorine:
• Lithium forms \(Li^{+}\), chlorine forms \(Cl^{-}\). Formula: \(LiCl\). Name: lithium chloride.
• Oxygen and potassium:
• Potassium forms \(K^{+}\), oxygen forms \(O^{2 -}\). To balance charges (\(+1\times2-2 = 0\)), formula: \(K_{2}O\). Name: potassium oxide.

Answer:

element #1	element #2	Forms ionic compound?	empirical formula of ionic compound	name of ionic compound
fluorine	potassium	yes	\(KF\)	potassium fluoride
lithium	chlorine	yes	\(LiCl\)	lithium chloride
oxygen	potassium	yes	\(K_{2}O\)	potassium oxide