Oxidation Numbers Flashcards
(9 cards)
What is the rule for oxidation numbers of elements?
They always have an oxidation number of 0
What is the oxidation number of group 1 elements?
+1
What is the oxidation number of group 2 elements?
+2
What is the rule for hydrogen?
Hydrogen always has an oxidation number of +1, except in hydride compounds
What is the rule for flourine?
Flourine always has an oxidation number of -1
What is the rule for oxygen?
Oxygen always has an oxidation number of -2, except in peroxide compounds
What is the rule for chlorine?
Chlorine always has an oxidation number of -1
What is the sum of oxidation numbers in a compound?
0
What is the rule for oxidation numbers where the element can form an ion?
The sum of oxidation numbers in an ion always equals the charge on the ion