Compounds Handout Key Worksheets With Answers Page 2
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7p. 4
Name each of the following polyatomic ions:
cyanide ion
chromate ion
–
–2
CN
=
CrO
=
4
sulfate ion
nitrate ion
–2
–
SO
=
NO
=
4
3
hydroxide ion
phosphate ion
–
–3
OH
=
PO
=
4
ammonium ion
acetate ion
+
–
NH
=
C
H
O
=
4
2
3
2
Combine each pair of ions to get the formula of the compound they form:
NH
F
LiCN
+
–
+
–
⇒
⇒
4
NH
+ F
Li
+ CN
4
SrCO
AlPO
+2
–2
+3
–3
⇒
⇒
3
4
Sr
+ CO
Al
+ PO
3
4
NaC
H
O
KOH
+
–
+
–
⇒
⇒
Na
+ C
H
O
2
3
2
K
+ OH
2
3
2
NiCrO
FeN
+2
–2
+3
–3
⇒
⇒
Ni
+ CrO
4
Fe
+ N
4
CdSO
CoP
+2
–2
+3
–3
⇒
⇒
Cd
+ SO
4
Co
+ P
4
p. 5
Combine each pair of ions to get the formula of the compound they form:
+
–2
+4
–2
+
–3
Cu
O
Sn
SO
K
P
4
Cu
O
Sn(SO
)
K
P
2
4
2
3
+
–2
+3
–2
+2
–3
Li
CO
Fe
S
Ni
PO
3
4
Li
CO
Fe
S
Ni
(PO
)
2
3
2
3
3
4
2
CHEMISTRY Naming Compounds Handout Key v 1-3
page 2 of 7
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