4.1 Chemical names and formulae

Which is the differentiation between Ionic compound and covalent compound?

• Ionic consists of Metal and Nonmetal, However covalent consists of Nonmetal and Nonmetal

• Ionic consists of Nonmetal and Nonmetal, However covalent consists of Metal and Nonmetal

Which is the charge of group 2?

• 2+

• 1+

• 3+

• 0

Which is the charge of group 7?

• -1

• -2

• -3

• 0

Which is the formulae of Calcium chloride?

• CaCl2

• CaCl

• Ca2Cl

• Ca2Cl3

Which is the formulae of Sulfur dioxide?

• SO

• SO2

• S2O3

• SO3