Chromium and Chlorine Compounds

The video tutorial explains how to write the formula for chromium III chloride by using the periodic table to identify element symbols and charges. It covers the concept of ionic charges, particularly for transition metals like chromium, and demonstrates the crisscross method to balance these charges. The tutorial concludes by verifying the formula to ensure the net charge is zero, confirming the correct formula for chromium III chloride as CrCl3.

What is the element symbol for Chromium?

• Ch

• Cm

• Cl

• Cr

What type of compound is formed between Chromium and Chlorine?

• Covalent

• Hydrogen

• Metallic

• Ionic

What is the ionic charge of Chromium in Chromium III Chloride?

• 1+

• 2+

• 3+

• 4+

What is the charge of Chlorine in the periodic table?

• 1+

• 1-

• 2-

• 3-

Which method is used to balance the charges in Chromium III Chloride?

• Crisscross

• Cross-multiplication

• Elimination

• Substitution

How many Chlorine atoms are needed to balance the charge of one Chromium atom in Chromium III Chloride?

• 1

• 2

• 3

• 4

What is the net charge of the Chromium III Chloride compound?

• 0

• 1+

• 3+

• 2-

What is the correct formula for Chromium III Chloride?

• CrCl2

• CrCl3

• CrCl

• Cr3Cl

Who is the presenter of the video tutorial?

• Dr. A

• Dr. B

• Dr. D

• Dr. C