Final answer:
In general, compounds that involve a metal binding with a non-metal or a semi-metal display ionic bonding, while compounds composed of only non-metals or semi-metals with non-metals display covalent bonding and are classified as molecular compounds. Magnesium Oxide (MgO) and Strontium Chloride (SrCl2) have ionic bonding, while Ozone (O3) and Methanol (CH3OH) have covalent bonding.
Step-by-step explanation:
In general, compounds that involve a metal binding with a non-metal or a semi-metal display ionic bonding, while compounds composed of only non-metals or semi-metals with non-metals display covalent bonding and are classified as molecular compounds.
a. Magnesium Oxide, MgO - This compound is formed by a metal (magnesium) binding with a non-metal (oxygen), so it has ionic bonding.
b. Strontium Chloride, SrCl2 - This compound is formed by a metal (strontium) binding with a non-metal (chlorine), so it also has ionic bonding.
c. Ozone, O3 - Ozone is composed of non-metals (oxygen), so it has covalent bonding.
d. Methanol, CH3OH - Methanol is composed of non-metals (carbon, hydrogen, and oxygen), so it also has covalent bonding.