Barium and Chlorate Ion Concepts

The video tutorial explains how to write the chemical formula for barium chlorate. It begins by identifying the element symbols for barium and chlorate, noting that chlorate is a polyatomic ion with a specific charge. The tutorial then discusses the need to balance the ionic charges between barium and chlorate to form a neutral compound. The final formula for barium chlorate is presented as Ba(ClO3)2, with an explanation of the use of parentheses to indicate multiple polyatomic ions. The video concludes with a brief thank you from Dr. B.

What is the element symbol for barium?

• Ba

• Br

• Be

• Bi

What is the charge of the chlorate ion?

• 1-

• 2-

• 2+

• 1+

Why is chlorate not found on the periodic table?

• It is a newly discovered element.

• It is a polyatomic ion.

• It is a gas at room temperature.

• It is a radioactive element.

What is the charge of a barium ion?

• 2-

• 1-

• 1+

• 2+

How many chlorate ions are needed to balance the charge of one barium ion?

• Four

• One

• Three

• Two

What is the net charge of the compound formed by barium and chlorate ions?

• 1+

• 0

• 2-

• 1-

What is the correct formula for barium chlorate?

• Ba(ClO3)2

• BaClO

• BaCl2

• BaClO2