Barium Compounds and Ions

The video tutorial explains how to write the formula for barium carbonate. It begins by identifying barium on the periodic table and recognizing carbonate as a polyatomic ion. The tutorial discusses the ionic charges of barium and carbonate, emphasizing the need to balance these charges to achieve a neutral compound. The final formula for barium carbonate is presented as BaCO3.

What is the chemical symbol for barium?

• B

• Be

• Br

• Ba

Which of the following is a polyatomic ion?

• Chloride

• Carbonate

• Sodium

• Barium

What type of bond is formed between barium and carbonate?

• Hydrogen

• Covalent

• Metallic

• Ionic

What is the charge of a barium ion?

• 2+

• 2-

• 1+

• 1-

How do the charges of barium and carbonate ions balance in barium carbonate?

• 3+ and 3-

• 2+ and 2-

• 2+ and 1-

• 1+ and 1-

What is the final chemical formula for barium carbonate?

• Ba2CO3

• Ba(CO3)2

• BaCO3

• BaCO2