Multiple Choice
What is the sum of the oxidation numbers of all atoms in a neutral molecule of magnesium sulfate (MgSO_4)?
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Calculate Oxidation Numbers
Multiple Choice
What is the oxidation number of carbon in CO?
A
-2
B
+4
C
+2
D
0
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Verified step by step guidance1
Recall that the oxidation number of oxygen in most compounds is usually -2.
Let the oxidation number of carbon in CO be x.
Write the equation for the sum of oxidation numbers in the molecule: \(x + (-2) = 0\) because CO is a neutral molecule.
Solve the equation for x: \(x - 2 = 0\) which gives \(x = +2\).
Therefore, the oxidation number of carbon in CO is +2.
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