Oxidation Numbers of Phosphorus

The video tutorial explains how to find the oxidation number for each element in the PH4+ ion. It begins by recognizing the ion's charge and setting up an equation to determine the oxidation number of phosphorus. The tutorial walks through the calculation process, showing that phosphorus has an oxidation number of -3. The video concludes by verifying the results and summarizing the findings.

What is the significance of the charge on an ion when determining oxidation numbers?

• It indicates the type of bond present.

• It shows the ion's stability.

• It determines the total oxidation number sum.

• It helps in identifying the number of electrons.

Why is hydrogen assigned a +1 oxidation number in PH4+?

• Because it is always +1 in all compounds.

• Because it is bonded to a metal.

• Because it has a higher electronegativity.

• Because it is bonded to a nonmetal.

What variable is used to represent the unknown oxidation number of phosphorus?

• x

• p

• z

• y

How is the equation set up to find the oxidation number of phosphorus in PH4+?

• x + 4 = 0

• x + 4 = 1

• x - 4 = 1

• x + 1 = 4

What is the oxidation number of phosphorus in PH4+ after solving the equation?

• -3

• +3

• 0

• +1

How do you verify the calculated oxidation number of phosphorus?

• By comparing it with standard values.

• By consulting a periodic table.

• By checking the sum against the ion's charge.

• By using a different chemical method.

What is the total sum of oxidation numbers in PH4+?

• +1

• +4

• 0

• -1