Mercury and Oxygen Compounds

The video tutorial explains how to write the chemical formula for mercury(II) oxide. It begins by identifying mercury and oxygen on the periodic table, noting their symbols as Hg and O, respectively. The tutorial then discusses the ionic charges of mercury and oxygen, with mercury having a 2+ charge and oxygen a 2- charge. These charges balance each other out to form the compound HgO. The video concludes by summarizing the process and confirming the formula for mercury(II) oxide.

What is the chemical symbol for mercury as found on the periodic table?

• Hg

• Me

• Mc

• Mr

Which element is represented by the symbol 'O'?

• Oxygen

• Osmium

• Osmium

• Oganesson

What does the Roman numeral II indicate about mercury in mercury(II) oxide?

• It has a 2+ charge

• It has a 2- charge

• It is diatomic

• It is a noble gas

What is the charge of an oxygen ion in mercury(II) oxide?

• 2+

• 2-

• 1-

• 1+

What is the correct formula for mercury(II) oxide?

• Hg2O

• Hg2O2

• HgO

• HgO2