Oxidation Numbers in NaIO3

The video tutorial explains how to determine the oxidation numbers for each element in NaIO3. It starts by noting that NaIO3 is a neutral compound, meaning the oxidation numbers must sum to zero. Sodium, being in group one, has a +1 oxidation number. The video then focuses on iodine, which is bonded to oxygen, typically having a -2 oxidation number. By setting up an equation, the oxidation number of iodine is calculated to be +5. The tutorial concludes by reiterating that the sum of oxidation numbers in NaIO3 is zero.

What is the total sum of oxidation numbers in a neutral compound like NaIO3?

• It is always positive.

• It is always negative.

• It varies depending on the compound.

• It is zero.

What is the oxidation number of sodium in NaIO3?

• -1

• 0

• +2

• +1

Which element in NaIO3 typically has an oxidation number of -2?

• Oxygen

• Iodine

• Hydrogen

• Sodium

How many oxygen atoms are present in NaIO3?

• 1

• 3

• 4

• 2

What is the oxidation number of iodine in NaIO3?

• +3

• +5

• -1

• 0

Which equation helps determine the oxidation number of iodine in NaIO3?

• x + 3 = 0

• 1 + x - 6 = 0

• 3x + 1 = 0

• x - 2 = 0

What is the role of Dr. B in the video?

• He explains the periodic table.

• He discusses the oxidation numbers in NaIO3.

• He talks about chemical reactions.

• He describes the properties of metals.