Question

writing and naming ionic compounds
fill in each column with the appropriate information.

	compound made of...	chemical formula	compound name	number of atoms
2	ni²⁺ and so₄	niso₄	nickel(ii) sulfate	6
3	cu⁺ and co₃
4	mg and cl
5	sn²⁺ and so₄
6	nh₄ and po₄
7	al and no₃
8	ca and so₃
9	fe²⁺ and co₃
10	ca and oh
11		li₂so₄
12		srco₃
13		nh₄f
14		cr₂o₃
15		fe₃(po₄)₂

Explanation:

Step1: Determine chemical formula

Use charge - balance to write formulas. For example, for $Cu^+$ and $CO_3^{2 - }$, two $Cu^+$ ions are needed to balance the charge of one $CO_3^{2 - }$ ion, so the formula is $Cu_2CO_3$.

Step2: Name the compound

Name the cation first, then the anion. For polyatomic anions, use their standard names. For example, $Cu_2CO_3$ is copper(I) carbonate.

Step3: Count number of atoms

Count the total number of atoms in the formula. For $Cu_2CO_3$, there are 2 Cu, 1 C, and 3 O, so a total of 6 atoms.

Compound Made Of...	Chemical Formula	Compound Name	Number of Atoms
$Mg$ and $Cl$	$MgCl_2$	magnesium chloride	3
$Sn^{2 + }$ and $SO_4$	$SnSO_4$	tin(II) sulfate	6
$NH_4$ and $PO_4$	$(NH_4)_3PO_4$	ammonium phosphate	16
$Al$ and $NO_3$	$Al(NO_3)_3$	aluminum nitrate	13
$Ca$ and $SO_3$	$CaSO_3$	calcium sulfite	5
$Fe^{2 + }$ and $CO_3$	$FeCO_3$	iron(II) carbonate	5
$Ca$ and $OH$	$Ca(OH)_2$	calcium hydroxide	5
	$Li_2SO_4$	lithium sulfate	7
	$SrCO_3$	strontium carbonate	5
	$NH_4F$	ammonium fluoride	6
	$Cr_2O_3$	chromium(III) oxide	5
	$Fe_3(PO_4)_2$	iron(II) phosphate	13

Answer:

See the completed table above.