Oxidation Numbers and Nickel Compounds

The video tutorial explains how to determine the oxidation numbers for elements in NiH2, a neutral compound. It covers the general rules for oxidation numbers, focusing on nickel and hydrogen. The tutorial sets up an equation to find the oxidation number of nickel, considering hydrogen's known oxidation state when bonded to metals. The solution shows that nickel has an oxidation number of +2. The video concludes with a summary of the oxidation numbers for each element in NiH2.

What is the overall charge of a neutral compound like nickel hydride?

• Depends on the elements

• Zero

• Negative

• Positive

Which type of metal is nickel classified as?

• Alkali metal

• Transition metal

• Alkaline earth metal

• Noble gas

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

• +1

• 0

• -1

• +2

How many hydrogen atoms are present in NiH2?

• 4

• 3

• 2

• 1

What equation is set up to find the oxidation number of nickel in NiH2?

• x + 1 = 0

• x - 2 = 0

• x + 2 = 0

• x - 1 = 0

What is the oxidation number of nickel in NiH2?

• +2

• -1

• 0

• +1

Why is it important to know the oxidation numbers in a compound?

• To calculate the compound's mass

• To find the compound's melting point

• To predict the compound's reactivity

• To determine the compound's color

What is the oxidation number of each hydrogen in NiH2?

• +1

• 0

• -1

• +2