Oxidation Numbers Flashcards

(9 cards)

1
Q

What is the rule for oxidation numbers of elements?

A

They always have an oxidation number of 0

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2
Q

What is the oxidation number of group 1 elements?

A

+1

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3
Q

What is the oxidation number of group 2 elements?

A

+2

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4
Q

What is the rule for hydrogen?

A

Hydrogen always has an oxidation number of +1, except in hydride compounds

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5
Q

What is the rule for flourine?

A

Flourine always has an oxidation number of -1

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6
Q

What is the rule for oxygen?

A

Oxygen always has an oxidation number of -2, except in peroxide compounds

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7
Q

What is the rule for chlorine?

A

Chlorine always has an oxidation number of -1

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8
Q

What is the sum of oxidation numbers in a compound?

A

0

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9
Q

What is the rule for oxidation numbers where the element can form an ion?

A

The sum of oxidation numbers in an ion always equals the charge on the ion

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