Question

Classify the following compounds as ionic, covalent, or metallic: NaCl, H2O, Fe, CO2, MgO.

Answer 1

1. NaCl  Sodium Chloride  - Ionic: It is formed by the transfer of electrons between a metal  sodium  and a non-metal  chlorine .2. H2O  Water  - Covalent: It is formed by the sharing of electrons between two non-metals  hydrogen and oxygen .3. Fe  Iron  - Metallic: It is a pure metal, and metallic bonds are present between the metal atoms.4. CO2  Carbon Dioxide  - Covalent: It is formed by the sharing of electrons between a non-metal  carbon  and another non-metal  oxygen .5. MgO  Magnesium Oxide  - Ionic: It is formed by the transfer of electrons between a metal  magnesium  and a non-metal  oxygen .