Chemical Properties of Carbonate and Chromium

This video tutorial explains how to write the formula for chromium 2 carbonate. It begins by identifying the element symbols for chromium and carbonate, highlighting that carbonate is a polyatomic ion with a two-minus charge. The tutorial then discusses the importance of balancing ionic charges in compounds, using the example of chromium 2 carbonate, which has a two-plus charge. The video concludes by deriving the formula CrCO3 and summarizing the process.

What is the element symbol for chromium?

• Co

• Ch

• Cm

• Cr

What type of ion is carbonate?

• Anion

• Monatomic ion

• Polyatomic ion

• Cation

What is the chemical formula for the carbonate ion?

• CO3

• CO2

• C3O2

• C2O4

What is the ionic charge of the carbonate ion?

• 1-

• 2-

• 1+

• 2+

What does the Roman numeral in Chromium 2 indicate?

• Number of neutrons

• Oxidation state

• Mass number

• Atomic number

Why must the charges in an ionic compound balance?

• To decrease the compound's solubility

• To increase the compound's reactivity

• To make the compound neutral

• To ensure the compound is stable

What is the final formula for Chromium 2 Carbonate?

• Cr2CO3

• Cr(CO3)2

• Cr2(CO3)3

• CrCO3