Sodium Phosphite and Ionic Charges

The video tutorial explains how to write the chemical formula for sodium phosphite. It begins by identifying the element symbols and the polyatomic ion phosphite, which has a charge of 3-. Sodium, with a charge of 1+, is balanced with phosphite to achieve a neutral compound. The tutorial demonstrates a method to balance the charges by adjusting the subscripts, resulting in the formula Na3PO3. The process is verified by checking the total charges, ensuring they sum to zero.

What is the chemical symbol for sodium?

• Na

• S

• So

• Sn

Which of the following is a polyatomic ion?

• PO3

• Cl

• Na

• O2

What is the ionic charge of sodium?

• 2+

• 3-

• 1-

• 1+

How do you balance the charges in sodium phosphite?

• Change the charge of phosphite

• Use a trick to balance charges

• Add more phosphite ions

• Add more sodium ions

What is the formula for sodium phosphite?

• Na3PO4

• Na2PO4

• Na3PO3

• NaPO3

What is the total charge of the sodium ions in sodium phosphite?

• 3-

• 3+

• 1+

• 0