fill in the name and empirical formula of each ionic compound that could be formed from the ions in this table:
some ionic compounds
cation anion empirical formula name of compound
pb²+ no₃⁻
cr³+ clo₃⁻
k+ cro₄²-

Question

Accepted Answer

# Explanation:
## Step1: Determine the empirical formula for $Pb^{2 +}$ and $NO_3^-$
The charge on $Pb^{2+}$ is $+ 2$ and on $NO_3^-$ is $-1$. To balance the charges, we need $2$ $NO_3^-$ ions for each $Pb^{2+}$ ion. So the empirical formula is $Pb(NO_3)_2$. The name of the compound: The cation is lead ($Pb^{2+}$) and the anion is nitrate ($NO_3^-$). So the name is lead(II) nitrate.
## Step2: Determine the empirical formula for $Cr^{3+}$ and $ClO_3^-$
The charge on $Cr^{3+}$ is $+3$ and on $ClO_3^-$ is $-1$. To balance the charges, we need $3$ $ClO_3^-$ ions for each $Cr^{3+}$ ion. So the empirical formula is $Cr(ClO_3)_3$. The name of the compound: The cation is chromium ($Cr^{3+}$) and the anion is chlorate ($ClO_3^-$). So the name is chromium(III) chlorate.
## Step3: Determine the empirical formula for $K^{+}$ and $CrO_4^{2 -}$
The charge on $K^{+}$ is $+1$ and on $CrO_4^{2-}$ is $-2$. To balance the charges, we need $2$ $K^{+}$ ions for each $CrO_4^{2-}$ ion. So the empirical formula is $K_2CrO_4$. The name of the compound: The cation is potassium ($K^{+}$) and the anion is chromate ($CrO_4^{2-}$). So the name is potassium chromate.

# Answer:
| cation | anion | empirical formula | name of compound |
| ---- | ---- | ---- | ---- |
| $Pb^{2+}$ | $NO_3^-$ | $Pb(NO_3)_2$ | lead(II) nitrate |
| $Cr^{3+}$ | $ClO_3^-$ | $Cr(ClO_3)_3$ | chromium(III) chlorate |
| $K^{+}$ | $CrO_4^{2-}$ | $K_2CrO_4$ | potassium chromate |

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QUESTION IMAGE

Question

Explanation:

Step1: Determine the empirical formula for \(Pb^{2 +}\) and \(NO_3^-\)

Step2: Determine the empirical formula for \(Cr^{3+}\) and \(ClO_3^-\)

Step3: Determine the empirical formula for \(K^{+}\) and \(CrO_4^{2 -}\)

Answer:

cation	anion	empirical formula	name of compound
\(Cr^{3+}\)	\(ClO_3^-\)	\(Cr(ClO_3)_3\)	chromium(III) chlorate
\(K^{+}\)	\(CrO_4^{2-}\)	\(K_2CrO_4\)	potassium chromate