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Chemistry 1 - OXNUM Flashcards | StudBud
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Chemistry 1 - OXNUM
Chemistry 1 - OXNUM
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Quiz over applying the rules for assignment of oxidation numbers to elements in compounds.
Flashcards
10 cards
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Practice quiz
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Questions
10
Answers
1
What are the oxidation numbers of the elements in the compound P
4
O
10
?
+5, -2
+5, +2
+10, -4
unable to determine
2
What is the oxidation number of H in HI?
0
+2
+1
-1
3
The algebraic sum of the oxidation numbers in a compound are equal to
unable to determine.
the oxidation number on the more electronegative element.
zero.
the charge on the ion.
4
Chemistry is my favorite subject.
Maybe....NOT!
True
If I get an A :)
False
5
Which three of the following four choices are purposes of oxidation numbers?
helps in balancing certain chemical reactions.
represents actual charges.
help in naming compounds
helps in writing formulas
6
What is the oxidation number of Cr in the polyatomic ion Cr
2
O
7
2
-
?
+2
+12
+6
+7
7
What is the oxidation number of an element in its natural form?
0
2
-1
1
8
What is the oxidation number of S in H
2
SO
3
?
-2
+6
+4
+1
9
What is the oxidation number of oxygen in most compounds?
-1
-2
+2
+1
10
Fluorine always has an oxidation number of
0
-1
+1
it depends.
