Mercury and Chlorine Compounds

This video tutorial explains how to determine the oxidation numbers for each element in HgCl2, a neutral compound. It highlights that mercury, a transition metal, can have different oxidation states depending on its bonding. Chlorine, in group 17, typically has an oxidation number of -1. The video demonstrates that with two chlorine atoms, the total oxidation number is -2, requiring mercury to have a +2 oxidation number to balance the compound to zero.

What is the overall charge of the compound HgCl2?

• Depends on the environment

• Neutral

• Negative

• Positive

Why is mercury not found in the standard oxidation number rules?

• It is a halogen

• It is a noble gas

• It is a non-metal

• It is a transition metal

What is the typical oxidation number for chlorine in compounds?

• -2

• -1

• 0

• +1

How many chlorine atoms are present in HgCl2?

• 4

• 2

• 3

• 1

What must be the oxidation number of mercury in HgCl2 to balance the compound?

• +1

• +2

• +4

• +3