Mercury and Sulfur Chemistry

The video tutorial explains how to write the chemical formula for mercury(II) sulfide. It begins by identifying the element symbol for mercury (Hg) and explains that the Roman numeral II indicates a 2+ charge. The tutorial then discusses sulfur, which has a 2- charge as it belongs to group 16 on the periodic table. The charges of mercury and sulfide are balanced to form a neutral compound, resulting in the formula HgS. The video concludes with a recap of the formula.

What is the element symbol for mercury?

• H

• Mg

• M

• Hg

What is the charge of mercury in mercury(II) compounds?

• 2+

• 0

• 3+

• 1+

In which group is sulfur found on the periodic table?

• Group 17

• Group 14

• Group 15

• Group 16

What is the ionic charge of sulfur?

• 0

• 3-

• 2-

• 1-

What is the chemical formula for mercury(II) sulfide?

• HS

• HgS2

• Hg2S

• HgS