Atoms bond because they have a need to have their outermost level of electrons be "full".
Atoms bond because they need to complete their valence electrons to 9.
Atoms bonds when they have a complete outer shell of electrons.
All of the above
Lewis dot structure
Ionic solids conduct electricity when dissolved in water.
Ionic solids have high melting temperatures.
Ionic solids are good conductors of electricity.
Ionic solids can be formed by reacting an alkali metal with a halogen.
Ionic solids form crystals.