Question

name anijahblock1. name the following ionic compounds using their chemical formulasionic compound | ionic name$\text{ag}_2\text{s}$ | silver sulfide$\text{cocl}_3$ | cobalt2. write the chemical formulas for the following ionic compounds using the names below.ionic compound | ionic name | scandium oxide | calcium acetate

Explanation:

Step1: Name $\text{CoCl}_3$

Cobalt has a +3 charge (since 3 $\text{Cl}^-$ ions with -1 each balance it), so we use a Roman numeral. The anion is chloride. Name: Cobalt(III) chloride

Step2: Find formula for Scandium oxide

Scandium forms $\text{Sc}^{3+}$, oxygen forms $\text{O}^{2-}$. Balance charges: 2 $\text{Sc}^{3+}$ and 3 $\text{O}^{2-}$ give neutral compound. Formula: $\text{Sc}_2\text{O}_3$

Step3: Find formula for Calcium acetate

Calcium forms $\text{Ca}^{2+}$, acetate is $\text{C}_2\text{H}_3\text{O}_2^-$. Balance charges: 1 $\text{Ca}^{2+}$ and 2 $\text{C}_2\text{H}_3\text{O}_2^-$ give neutral compound. Formula: $\text{Ca(C}_2\text{H}_3\text{O}_2\text{)}_2$

Answer:

For Question 1:

• $\text{Ag}_2\text{S}$: Silver Sulfide (correct as written)
• $\text{CoCl}_3$: Cobalt(III) chloride

For Question 2:

• Scandium oxide: $\text{Sc}_2\text{O}_3$
• Calcium acetate: $\text{Ca(C}_2\text{H}_3\text{O}_2\text{)}_2$