Sodium Chromate and Ionic Charges

The video tutorial explains how to write the formula for sodium chromate. It begins by identifying sodium and chromate ions, highlighting that chromate is a polyatomic ion with a 2- charge. The tutorial then demonstrates how to balance the charges between sodium (1+) and chromate to achieve a neutral compound, resulting in the formula Na2CrO4. The video concludes with a brief recap of the process.

What is the element symbol for sodium?

• So

• Na

• S

• Sn

What type of ion is chromate considered as?

• Cation

• Monatomic ion

• Polyatomic ion

• Anion

What is the ionic charge of the chromate ion?

• 2-

• 1-

• 1+

• 2+

What is the charge of a sodium ion?

• 1+

• 2+

• 1-

• 2-

Why do the charges in sodium chromate need to add up to zero?

• To make it an anion

• To make it a cation

• To ensure it is a neutral compound

• To make it a polyatomic ion

How do you balance the charges in sodium chromate?

• By using a subscript for chromate

• By using a subscript for sodium

• By adding more sodium ions

• By adding more chromate ions