Chromium 3 Sulfide Concepts

The video tutorial explains how to write the formula for chromium(III) sulfide. It begins by identifying the element symbols and charges for chromium and sulfur. The tutorial then demonstrates how to balance these charges using the crisscross method to ensure a net charge of zero, resulting in the formula Cr2S3. Finally, the video verifies the formula by checking the charge balance.

What is the symbol for chromium in the periodic table?

• Cm

• Cr

• Ch

• Co

What charge does chromium have in chromium 3 sulfide?

• 2+

• 1+

• 3+

• 4+

Which group does sulfur belong to in the periodic table?

• Group 17

• Group 14

• Group 15

• Group 16

What is the charge of sulfur in chromium 3 sulfide?

• 1-

• 2-

• 3-

• 4-

What method is used to balance the charges in chromium 3 sulfide?

• Crisscross method

• Cross-multiplication

• Elimination method

• Substitution method

What is the chemical formula for chromium 3 sulfide?

• CrS2

• Cr3S2

• Cr2S3

• CrS

How do the charges of chromium and sulfur add up in the formula Cr2S3?

• 2+ and 2-

• 3+ and 3-

• 4+ and 4-

• 6+ and 6-