Question

name:

name	transition metal charge	formula
2. copper (i) oxide
3. chromium (iii) sulfide
4. cobalt (ii) fluoride
5. iron (iii) nitride
6. lead (iv) iodide
7. silver (i) bromide
		8. fecl₂
		9. pb₃n₂
		10. co₂s₃
		11. cus
		12. hg₂o
		13. mncl₂
		14. znf₂

1. what are some strategies that you are using to help you remember how to name correctly for transition metals and polyatomic ions?
2. what are some strategies that you are using to help you remember how to write formulas correctly for transition metals and polyatomic ions?

Explanation:

Step1: Identify transition - metal charges from names

For Copper (II) Sulfide, the transition - metal charge of copper is +2. For Copper (I) Oxide, the charge of copper is +1. For Chromium (III) Sulfide, the charge of chromium is +3. For Cobalt (II) Fluoride, the charge of cobalt is +2. For Iron (III) Nitride, the charge of iron is +3. For Lead (IV) Iodide, the charge of lead is +4. For Silver (I) Bromide, the charge of silver is +1.

Step2: Write formulas based on charges

1. Copper (II) Sulfide: Copper has a charge of +2 ($Cu^{2 + }$) and sulfide has a charge of - 2 ($S^{2 - }$), so the formula is $CuS$.
2. Copper (I) Oxide: Copper has a charge of +1 ($Cu^{+}$) and oxide has a charge of - 2 ($O^{2 - }$), so the formula is $Cu_{2}O$.
3. Chromium (III) Sulfide: Chromium has a charge of +3 ($Cr^{3+}$) and sulfide has a charge of - 2 ($S^{2 - }$), so the formula is $Cr_{2}S_{3}$.
4. Cobalt (II) Fluoride: Cobalt has a charge of +2 ($Co^{2+}$) and fluoride has a charge of - 1 ($F^{-}$), so the formula is $CoF_{2}$.
5. Iron (III) Nitride: Iron has a charge of +3 ($Fe^{3+}$) and nitride has a charge of - 3 ($N^{3 - }$), so the formula is $FeN$.
6. Lead (IV) Iodide: Lead has a charge of +4 ($Pb^{4+}$) and iodide has a charge of - 1 ($I^{-}$), so the formula is $PbI_{4}$.
7. Silver (I) Bromide: Silver has a charge of +1 ($Ag^{+}$) and bromide has a charge of - 1 ($Br^{-}$), so the formula is $AgBr$.
8. $FeCl_{2}$: Iron has a charge of +2, name is Iron (II) Chloride.
9. $Pb_{3}N_{2}$: Lead has a charge of +2, name is Lead (II) Nitride.
10. $Co_{2}S_{3}$: Cobalt has a charge of +3, name is Cobalt (III) Sulfide.
11. $CuS$: Copper has a charge of +2, name is Copper (II) Sulfide.
12. $Hg_{2}O$: Mercury has a charge of +1, name is Mercury (I) Oxide.
13. $MnCl_{2}$: Manganese has a charge of +2, name is Manganese (II) Chloride.
14. $ZnF_{2}$: Zinc has a charge of +2, name is Zinc (II) Fluoride.
15. Strategies for naming: Memorize common ion charges, use the Roman - numeral to indicate the transition - metal charge in the name, and understand the rules of ionic - compound naming (cation first, anion second).
16. Strategies for writing formulas: Determine the charges of the cation and anion, use the criss - cross method to balance the charges and get the subscripts in the formula.

Answer:

Name	Transition Metal Charge	Formula
2. Copper (I) Oxide	+1	$Cu_{2}O$
3. Chromium (III) Sulfide	+3	$Cr_{2}S_{3}$
4. Cobalt (II) Fluoride	+2	$CoF_{2}$
5. Iron (III) Nitride	+3	$FeN$
6. Lead (IV) Iodide	+4	$PbI_{4}$
7. Silver (I) Bromide	+1	$AgBr$
8. Iron (II) Chloride	+2	$FeCl_{2}$
9. Lead (II) Nitride	+2	$Pb_{3}N_{2}$
10. Cobalt (III) Sulfide	+3	$Co_{2}S_{3}$
11. Copper (II) Sulfide	+2	$CuS$
12. Mercury (I) Oxide	+1	$Hg_{2}O$
13. Manganese (II) Chloride	+2	$MnCl_{2}$
14. Zinc (II) Fluoride	+2	$ZnF_{2}$
15. Strategies for naming	-	Memorize ion charges, use Roman - numerals, follow naming rules.
16. Strategies for writing formulas	-	Determine charges, use criss - cross method.