decide whether each pair of elements in the table below will form an ionic compound. if they will, write the…
decide whether each pair of elements in the table below will form an ionic compound. if they will, write the empirical formula of the compound formed in the space provided. element #1 element #2 forms ionic compound? empirical formula of ionic compound sulfur potassium yes no lithium chlorine yes no bromine sulfur yes no potassium fluorine yes no
Answer
Explanation:
Step1: Recall ionic - compound formation rules
Ionic compounds form between a metal and a non - metal.
Step2: Analyze sulfur and potassium
Sulfur is a non - metal and potassium is a metal. They form an ionic compound. Sulfur gains 2 electrons to form $S^{2 - }$ and potassium loses 1 electron to form $K^{+}$. The empirical formula is $K_{2}S$.
Step3: Analyze lithium and chlorine
Lithium is a metal and chlorine is a non - metal. They form an ionic compound. Lithium loses 1 electron to form $Li^{+}$ and chlorine gains 1 electron to form $Cl^{-}$. The empirical formula is $LiCl$.
Step4: Analyze bromine and sulfur
Both bromine and sulfur are non - metals. They do not form an ionic compound.
Step5: Analyze potassium and fluorine
Potassium is a metal and fluorine is a non - metal. They form an ionic compound. Potassium loses 1 electron to form $K^{+}$ and fluorine gains 1 electron to form $F^{-}$. The empirical formula is $KF$.
Answer:
| element #1 | element #2 | Forms ionic compound? | empirical formula of ionic compound |
|---|---|---|---|
| sulfur | potassium | yes | $K_{2}S$ |
| lithium | chlorine | yes | $LiCl$ |
| bromine | sulfur | no | |
| potassium | fluorine | yes | $KF$ |