Oxidation Numbers and Ion Charges

The video explains how to find the oxidation numbers for each element in ammonium nitrite (NH4NO2). It breaks down the compound into ammonium and nitrite ions, each with its respective charge. The oxidation numbers for nitrogen and hydrogen in the ammonium ion are calculated, followed by the oxidation numbers for nitrogen and oxygen in the nitrite ion. The video concludes by summarizing that the overall oxidation numbers add up to zero, confirming the compound's neutrality.

What is the overall charge of ammonium nitrite?

• Positive

• Negative

• Neutral

• Variable

What is the charge of the ammonium ion?

• Variable

• Negative

• Positive

• Neutral

How many hydrogen atoms are present in the ammonium ion?

• Two

• Three

• Five

• Four

What is the oxidation number of nitrogen in the ammonium ion?

• -3

• +3

• 0

• +1

What is the charge of the nitrite ion?

• Negative

• Variable

• Positive

• Neutral

What is the typical oxidation number of oxygen in compounds?

• -2

• 0

• -1

• +2

How many oxygen atoms are present in the nitrite ion?

• Four

• Two

• One

• Three

What is the oxidation number of nitrogen in the nitrite ion?

• +1

• -3

• +3

• 0

What is the sum of oxidation numbers in a neutral compound?

• Negative

• Positive

• Variable

• Zero

What is the oxidation number of hydrogen when bonded to non-metals?

• 0

• -1

• +2

• +1