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Oxidation Numbers
Test Description: Redox Review - Oxidation Numbers
Instructions: Answer all questions to get your test result.
1) What is the oxidation number of Chlorine in HClO4?
A
+5
B
+1
C
+3
D
+7
2) The number of nitrogen in N2 is
A
-3
B
0
C
+3
D
+1
3) What is the oxidation number of Pt in K2PtCl6?
A
-2
B
-4
C
+2
D
+4
4) What is the oxidation number of sulfur in H2SO4?
A
0
B
+6
C
+4
D
-2
5) What is the oxidation number of nitrogen in (NO3)-1
A
+1
B
-5
C
+5
D
+3
6) The oxidation number of nitrogen in N2O is
A
+2
B
+1
C
-2
D
-1
7) The oxidation number of manganese in KMnO4 is
A
+7
B
+3
C
+4
D
+1
8) Oxygen has an oxidation number of -2 in
A
OF2
B
Na2O2
C
O2
D
NO2
9) What is the sum of the oxidation numbers in CO2?
A
+4
B
0
C
-2
D
-4
10) What is the oxidation number of Cr in the dichromate ion (Cr2O7)-2
A
+3
B
+5
C
+6
D
+1
*select an answer for all questions
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