Understanding Potassium Chromate and Ions

The video tutorial explains how to name the compound K2 C4, which consists of potassium, a metal, and C4, the chromate ion. It details the steps to name the metal as it appears on the periodic table and the polyatomic ion, either from memory or by looking it up. The tutorial also covers writing the formula for potassium chromate, explaining the need to balance the charges of the ions to achieve a net charge of zero, resulting in the formula K2 C4.

What is the metal component in the chemical formula K2C4?

• Calcium

• Potassium

• Chromium

• Carbon

What type of ion is C4 in the compound K2C4?

• Diatomic ion

• Anion

• Monatomic ion

• Polyatomic ion

What is the name of the polyatomic ion C4 in the compound K2C4?

• Sulfate

• Nitrate

• Phosphate

• Chromate

How many potassium ions are needed to balance the charge of the chromate ion in K2C4?

• Four

• Three

• Two

• One

What is the overall charge of the compound K2C4?

• Positive

• Negative

• Zero

• Neutral

What is the full name of the compound K2C4?

• Potassium Phosphate

• Potassium Chromate

• Potassium Nitrate

• Potassium Sulfate