Match the molecule or compound to the type of bond found between the elements.
Column A
1. _ NaCl
2. _ MgBr2
3. _ CO2
4. _ SO2
Column B
a.ionic bond
b.covalent bond
1. a.ionic bond (NaCl)
2. a.ionic bond (MgBr2)
3. b.covalent bond (CO2)
4. b.covalent bond (SO2)