Oxidation Numbers and Lithium Compounds

This video tutorial explains how to determine the oxidation numbers for each element in lithium phosphate (Li3PO4). It begins by noting that the compound is neutral, meaning the oxidation numbers must sum to zero. Lithium, being in group one, has an oxidation number of +1. Oxygen typically has an oxidation number of -2. The video then demonstrates how to calculate the oxidation number for phosphorus, which is found to be +5. The tutorial concludes by verifying that the sum of all oxidation numbers in the compound equals zero, confirming its neutrality.

What is the overall charge of the compound Li3PO4?

• Variable

• Neutral

• Negative

• Positive

Which group on the periodic table does lithium belong to?

• Group 4

• Group 3

• Group 2

• Group 1

What is the typical oxidation number for oxygen in compounds?

• 0

• -3

• -2

• -1

How many oxygen atoms are present in Li3PO4?

• 3

• 2

• 5

• 4

What is the oxidation number of lithium in Li3PO4?

• +1

• +2

• +3

• 0

What is the oxidation number of phosphorus in Li3PO4?

• +4

• +3

• +6

• +5

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

• 0

• +2

• +1

• -1

Which element's oxidation number is determined by solving an equation in this video?

• Phosphorus

• Oxygen

• Hydrogen

• Lithium