Mastering Ionic Formulas for Binary Compounds

What is the first step in writing chemical formulas for ionic compounds?

• Balance the charges

• Determine the number of atoms

• Find the elements on the periodic table

• Write the chemical name

What is the charge of Lithium in the periodic table?

• +1

• +2

• -1

• -2

How many Lithium atoms are needed to balance the charge of one Oxygen atom in Lithium Oxide?

• Four

• Three

• Two

• One

What is the correct chemical formula for Lithium Oxide?

• Li2O

• LiO

• Li2O2

• LiO2

What is the charge of Potassium in the periodic table?

• +2

• -2

• +1

• -1

How many Potassium atoms are needed to balance the charge of one Nitrogen atom in Potassium Nitride?

• Three

• Four

• Two

• One

What is the correct chemical formula for Potassium Nitride?

• K3N

• K2N

• KN

• KN3

What is the charge of Sodium in the periodic table?

• +1

• -2

• +2

• -1

What is the correct chemical formula for Sodium Chloride?

• Na2Cl2

• NaCl2

• Na2Cl

• NaCl

What is a common mistake when writing chemical formulas for ionic compounds?

• Writing the chemical name

• Finding elements on the periodic table

• Balancing the charges

• Including the charges in the final formula