Barium and Perchlorate Compounds

The video tutorial explains how to write the chemical formula for barium perchlorate. It begins by identifying barium as a metal and perchlorate as a polyatomic ion with a 1- charge. The tutorial details the need to balance the 2+ charge of barium with two perchlorate ions, resulting in a neutral compound. The final formula is presented as Ba(ClO4)2.

What is the element symbol for barium?

• Ba

• Br

• Be

• B

Which of the following is true about perchlorate?

• It is a metal with a 2+ charge.

• It is a noble gas.

• It is a single element found on the periodic table.

• It is a polyatomic ion with a 1- charge.

What is the charge of a barium ion?

• 1+

• 2-

• 1-

• 2+

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

• Four

• Three

• Two

• One

What is the purpose of using parentheses in the formula for barium perchlorate?

• To indicate the charge of barium.

• To show the number of barium ions.

• To denote multiple perchlorate ions.

• To highlight the ionic bond.

What is the final formula for barium perchlorate?

• Ba2(ClO4)

• Ba(ClO3)2

• Ba(ClO4)2

• BaClO4