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Oxidation numbers

Quiz by Olga TIMONEY

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Q 1/14
Score 0
What is the oxidation number of chlorine in sodium chloride (NaCl)?
29
-2
0
+1
-1

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14 questions

Show answers

Q1
What is the oxidation number of chlorine in sodium chloride (NaCl)?
-2
0
+1
-1
30s
Q2
What is the oxidation number of manganese in potassium permanganate (KMnO4)?
+5
+3
+7
+2
30s
Q3
What is the oxidation number of sulfur in hydrogen sulfide (H2S)?
-2
+1
+2
-1
30s
Q4
What is the oxidation number of nitrogen in ammonia (NH3)?
-3
+3
-2
+2
30s
Q5
What is the oxidation number of oxygen in hydrogen peroxide (H2O2)?
-2
+1
-1
0
30s
Q6
What is the oxidation number of carbon in methane (CH4)?
+4
-4
0
+2
30s
Q7
What is the oxidation number of chromium in potassium dichromate (K2Cr2O7)?
+4
+6
+3
+2
30s
Q8
What is the oxidation number of iron in iron (II) chloride (FeCl2)?
+2
-2
+1
+3
30s
Q9
What is the oxidation number of hydrogen in compounds?
-1
+1
0
+2
30s
Q10
What is the oxidation number of oxygen in most compounds?
+2
0
+1
-2
30s
Q11
What is the oxidation number of an element in its elemental form?
0
-1
+2
+1
30s
Q12
What is the oxidation number of chlorine in most compounds?
-2
0
-1
+1
30s
Q13
What is the oxidation number of group 1 elements in compounds?
0
+1
-1
+2
30s
Q14
What is the oxidation number of magnesium in MgO?
+1
+2
0
-2
30s

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