Chromium and Sulfate Compounds

The video tutorial explains how to name the compound CrSO4 using the rules for naming ionic compounds. It begins by identifying the sulfate ion as a polyatomic ion and explains that chromium is a transition metal. The tutorial details how to determine the ionic charges of the components, emphasizing that chromium can have different charges. It concludes by explaining the use of Roman numerals to indicate the charge of chromium, resulting in the name Chromium IV Sulfate.

What is the polyatomic ion present in CrSO4?

• Sulfate

• Nitrate

• Phosphate

• Carbonate

Which type of metal is chromium in the compound CrSO4?

• Transition metal

• Alkaline earth metal

• Noble gas

• Alkali metal

What is the first step in naming the compound CrSO4?

• Identify the charge of chromium

• Write the name of the polyatomic ion

• Determine the number of sulfate ions

• Write the name of chromium

How many sulfate ions are bonded to chromium in CrSO4?

• Three

• Two

• One

• Four

What is the total negative charge contributed by the sulfate ions in CrSO4?

• 2-

• 8-

• 4-

• 6-

What Roman numeral is used in the name of CrSO4 to indicate the charge of chromium?

• II

• III

• IV

• V

Why is a Roman numeral used in the name of CrSO4?

• To denote the total charge of the compound

• To specify the ionic charge of chromium

• To show the charge of the polyatomic ion

• To indicate the number of sulfate ions

What is the ionic charge of chromium in CrSO4?

• 4+

• 3+

• 2+

• 5+

How many sulfate ions are needed to balance the charge of chromium in CrSO4?

• Three

• Two

• One

• Four