Ionic Compounds and Their Properties

The video tutorial explains how to write the chemical formula for Iron(II) Bromide using the periodic table. It discusses the ionic nature of the compound, focusing on the charges of iron and bromine. The tutorial introduces the crisscross method to balance these charges and derive the correct formula, FeBr2. Finally, it verifies the formula by ensuring the net charge is zero, confirming the compound's neutrality.

What are the symbols for iron and bromine as found on the periodic table?

• Fe and Br

• Ir and Bm

• In and Be

• I and Br

Why is iron(II) bromide considered an ionic compound?

• Because it is made of a metal and a metalloid

• Because it is made of two nonmetals

• Because it is made of a metal and a nonmetal

• Because it is made of two metals

What is the charge on iron in iron(II) bromide?

• 2-

• 1-

• 2+

• 1+

What is the charge on bromine in iron(II) bromide?

• 2+

• 2-

• 1-

• 1+

What method is used to balance the charges in iron(II) bromide?

• Addition method

• Substitution method

• Crisscross method

• Elimination method

What is the correct formula for iron(II) bromide?

• FeBr2

• Fe2Br2

• Fe2Br

• FeBr

How many bromine atoms are needed to balance the charge of one iron atom in iron(II) bromide?

• Four

• Two

• Three

• One

What is the net charge of iron(II) bromide when the formula is correctly balanced?

• 0

• 2-

• 1+

• 1-