Question

ionic compounds containing transition metals
please complete the following table:

name of ionic compound	formula of ionic compound
2. copper (i) oxide
3. chromium (iii) cyanide
4. cobalt (ii) hydroxide
5. silver bromide
6. zinc nitrate
7. iron (iii) acetate
8. lead (iv) sulfate
9.	fecl₂
10.	pbso₃
11.	co₂(co₃)₃
12.	agno₃
13.	zn(cn)₂
14.	cuclo₃
15.	cr(oh)₃
16.	hg₂o

Explanation:

Step1: Recall ion - charge rules

For transition metals, the Roman numeral indicates the oxidation state. For polyatomic ions, know their standard charges (e.g., sulfate $SO_{4}^{2 - }$, oxide $O^{2 - }$, cyanide $CN^{-}$, hydroxide $OH^{-}$, nitrate $NO_{3}^{-}$, carbonate $CO_{3}^{2 - }$, acetate $C_{2}H_{3}O_{2}^{-}$, chlorate $ClO_{3}^{-}$).

Step2: Determine formulas for given names

Copper (I) oxide

Copper (I) has a charge of $Cu^{+}$ and oxide has a charge of $O^{2 - }$. To balance the charges, the formula is $Cu_{2}O$.

Chromium (III) cyanide

Chromium (III) has a charge of $Cr^{3 + }$ and cyanide has a charge of $CN^{-}$. The formula is $Cr(CN)_{3}$.

Cobalt (II) hydroxide

Cobalt (II) has a charge of $Co^{2 + }$ and hydroxide has a charge of $OH^{-}$. The formula is $Co(OH)_{2}$.

Silver bromide

Silver has a common charge of $Ag^{+}$ and bromide has a charge of $Br^{-}$. The formula is $AgBr$.

Zinc nitrate

Zinc has a charge of $Zn^{2 + }$ and nitrate has a charge of $NO_{3}^{-}$. The formula is $Zn(NO_{3})_{2}$.

Iron (III) acetate

Iron (III) has a charge of $Fe^{3 + }$ and acetate has a charge of $C_{2}H_{3}O_{2}^{-}$. The formula is $Fe(C_{2}H_{3}O_{2})_{3}$.

Lead (IV) sulfate

Lead (IV) has a charge of $Pb^{4 + }$ and sulfate has a charge of $SO_{4}^{2 - }$. The formula is $Pb(SO_{4})_{2}$.

Step3: Determine names for given formulas

$FeCl_{2}$

Iron has a charge of $Fe^{2 + }$ (since chloride has a charge of $Cl^{-}$ and there are two of them), so the name is Iron (II) chloride.

$PbSO_{3}$

Lead has a charge of $Pb^{2 + }$ (since sulfite $SO_{3}^{2 - }$ has a - 2 charge), so the name is Lead (II) sulfite.

$Co_{2}(CO_{3})_{3}$

Cobalt has a charge of $Co^{3 + }$ (since there are 2 cobalt atoms and 3 carbonate ions with a - 2 charge each), so the name is Cobalt (III) carbonate.

$AgNO_{3}$

Silver has a charge of $Ag^{+}$, so the name is Silver nitrate.

$Zn(CN)_{2}$

Zinc has a charge of $Zn^{2 + }$, so the name is Zinc cyanide.

$CuClO_{3}$

Copper has a charge of $Cu^{+}$, so the name is Copper (I) chlorate.

$Cr(OH)_{3}$

Chromium has a charge of $Cr^{3 + }$, so the name is Chromium (III) hydroxide.

$Hg_{2}O$

Mercury (I) exists as $Hg_{2}^{2 + }$, so the name is Mercury (I) oxide.

Answer:

Name of Ionic Compound	Formula of Ionic Compound
2. Copper (I) oxide	$Cu_{2}O$
3. Chromium (III) cyanide	$Cr(CN)_{3}$
4. Cobalt (II) hydroxide	$Co(OH)_{2}$
5. Silver bromide	$AgBr$
6. Zinc nitrate	$Zn(NO_{3})_{2}$
7. Iron (III) acetate	$Fe(C_{2}H_{3}O_{2})_{3}$
8. Lead (IV) sulfate	$Pb(SO_{4})_{2}$
9. Iron (II) chloride	$FeCl_{2}$
10. Lead (II) sulfite	$PbSO_{3}$
11. Cobalt (III) carbonate	$Co_{2}(CO_{3})_{3}$
12. Silver nitrate	$AgNO_{3}$
13. Zinc cyanide	$Zn(CN)_{2}$
14. Copper (I) chlorate	$CuClO_{3}$
15. Chromium (III) hydroxide	$Cr(OH)_{3}$
16. Mercury (I) oxide	$Hg_{2}O$