Oxidation Numbers in PF6-

The video tutorial explains how to find the oxidation numbers for phosphorus in the PF6- ion. It begins by discussing the ion's charge and the known oxidation number of fluorine. An equation is set up to solve for phosphorus's oxidation number, which is determined to be +5. The solution is verified by checking the sum of oxidation numbers against the ion's charge.

What does the negative charge in PF6- indicate about the ion?

• It is an ion with a negative charge.

• It has no charge.

• It has a positive charge.

• It is a neutral molecule.

What is the oxidation number of fluorine in PF6-?

• +1

• 0

• +2

• -1

How many fluorine atoms are present in PF6-?

• 6

• 4

• 5

• 7

What equation is set up to find the oxidation number of phosphorus in PF6-?

• x + 6 = 1

• x - 6 = -1

• x - 6 = 1

• x + 6 = -1

What is the oxidation number of phosphorus in PF6-?

• +3

• +4

• +5

• +6

How do you verify the oxidation number of phosphorus in PF6-?

• By checking if the sum equals zero.

• By adding the oxidation numbers of all atoms to get -1.

• By comparing with another compound.

• By ensuring the sum is positive.

What is the total charge of the PF6- ion?

• 0

• +1

• -1

• -2