Understanding Phosphite Compounds and Ions

The video tutorial explains how to name the compound Na3PO3 as sodium phosphite. It begins by identifying sodium as a metal with a +1 charge and explains that three sodium ions contribute a total charge of +3. The polyatomic ion PO3 is identified as phosphite with a -3 charge, balancing the compound. The tutorial concludes by encouraging further practice on naming and writing chemical formulas.

What is the metal component in the compound Na3PO3?

• Nitrogen

• Oxygen

• Sodium

• Phosphorus

How many sodium ions are present in Na3PO3?

• One

• Four

• Three

• Two

What is the charge of the polyatomic ion PO3 in Na3PO3?

• Minus one

• Minus three

• Zero

• Minus two

Which table would you refer to for identifying the charge of PO3?

• Periodic Table

• Common Ion Table

• Molecular Table

• Elemental Table

What is the correct name for the compound Na3PO3?

• Sodium Phosphate

• Sodium Phosphorite

• Sodium Phosphide

• Sodium Phosphite