| A | B |
|---|
| covalent bond | formed between non-metals |
| ionic bond | formed between a metal and a non-metal |
| positive ion | Na+ |
| negative ion | Cl- |
| inert gas | electron structure of these elements is produced when either a covalent or ionic bond is formed |
| positive metal ion | produced when electron(s) transferred to non-metal |
| negative non-metal ion | produced when electron(s) transferred from metal |
| KF | an ionic compound |
| CH4 | a covalent compound |
| ionic compounds have | high melting and boiling points |
| covalent compounds | have low melting and boiling points |
