Chromium and Bromine Compounds

The video tutorial explains how to write the formula for chromium-6 bromide. It begins by identifying the element symbols for chromium and bromine, and discusses their ionic charges. The tutorial then explains how to balance these charges to form a neutral compound, resulting in the formula CrBr6. Finally, it covers how to name the compound based on its formula, emphasizing the importance of indicating the charge of chromium in the name.

What is the element symbol for chromium?

• Cr

• Cm

• Ch

• Co

What does the Roman numeral six indicate in chromium-6 bromide?

• The atomic number of chromium

• The charge on chromium

• The number of bromine atoms

• The number of electrons in bromine

What is the ionic charge of bromine in the periodic table?

• 2-

• 1-

• 1+

• 2+

How many bromide ions are needed to balance the charge of one chromium ion in chromium-6 bromide?

• 4

• 3

• 5

• 6

What is the chemical formula for chromium-6 bromide?

• CrBr3

• Cr6Br

• CrBr6

• Cr2Br6

How would you write the name of CrBr6?

• Chromium bromide

• Chromium bromide-6

• Hexachromium bromide

• Chromium-6 bromide