Ionic Compounds and Their Properties

Dr. B explains how to name the compound Ca3(PO4)2, identifying it as a ternary ionic compound. The video covers the naming rules for such compounds, focusing on calcium phosphate. It also discusses the representation of the compound using Lewis structures and explains the concept of a formula unit in crystalline structures.

What type of compound is Ca3(PO4)2?

• Binary ionic compound

• Ternary ionic compound

• Metallic compound

• Covalent compound

Which of the following is an example of a ternary ionic compound?

• NaCl

• H2O

• NaNO3

• CO2

How is the metal in a ternary ionic compound named?

• By its oxidation state

• By its atomic number

• As it appears on the periodic table

• Using its Latin name

What is the name of the PO4 ion in Ca3(PO4)2?

• Phosphite

• Phosphate

• Phosphide

• Phosphorite

What is the correct name for the compound Ca3(PO4)2?

• Calcium phosphorite

• Calcium phosphide

• Calcium phosphate

• Calcium phosphite

What does a Lewis structure represent in terms of ionic compounds?

• The ionic charges

• The molecular geometry

• The arrangement of atoms

• The distribution of electrons

In a Lewis structure of Ca3(PO4)2, how many calcium ions are present?

• One

• Three

• Four

• Two

What is a formula unit in the context of ionic compounds?

• A type of chemical bond

• A unit of mass

• A single molecule

• A representation of the smallest ratio of ions

How do ionic compounds like calcium phosphate behave in water?

• They remain intact

• They form a precipitate

• They react with water

• They dissolve and separate into ions

What is the significance of a crystalline structure in ionic compounds?

• It represents the orderly arrangement of ions

• It influences the melting point

• It affects the solubility

• It determines the color of the compound