Oxidation Numbers and Nickel Compounds

This video tutorial explains how to determine the oxidation number of nickel in nickel(II) phosphate (Ni3(PO4)2). It begins by discussing the neutrality of the compound and the role of oxidation numbers. The video then focuses on the phosphate ion, explaining its charge and how it contributes to the overall calculation. The tutorial provides a step-by-step guide to setting up and solving the equation to find the oxidation number of nickel, concluding with a brief mention of additional resources for further learning.

What is the oxidation number of nickel in a neutral compound like nickel(II) phosphate?

• It is always negative.

• It is always positive.

• It varies depending on the compound.

• It is always zero.

What is the charge of the phosphate ion in nickel(II) phosphate?

• 4+

• 1-

• 3-

• 2+

How do the oxidation numbers in an ion relate to the charge of the ion?

• They are always negative.

• They are always positive.

• They add up to the charge of the ion.

• They add up to zero.

What equation is set up to find the oxidation number of nickel in nickel(II) phosphate?

• 3x + 3(-2) = 0

• 2x + 3(-2) = 0

• 3x + 2(-3) = 0

• x + 3(-2) = 0

What is the result of solving the equation for the oxidation number of nickel?

• Nickel has an oxidation number of +2.

• Nickel has an oxidation number of +3.

• Nickel has an oxidation number of -2.

• Nickel has an oxidation number of 0.

What is the oxidation number of nickel in nickel(II) phosphate?

• +3

• +2

• 0

• +1

What additional resource is provided for finding the oxidation number of phosphorus?

• A link in the description

• A textbook reference

• A video tutorial

• A PDF guide

Why is it important to know the oxidation number of elements in a compound?

• To understand the compound's reactivity

• To calculate the compound's mass

• To determine the compound's color

• To predict the compound's melting point

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

• He is the narrator explaining the concept.

• He is a student asking questions.

• He is a guest speaker.

• He is a lab technician.