What do atoms form bonds
To have a full outer shell and have a stable electron configuration
What charge ions do metals form
Positive
What charge do non metals form
Negative
Ionic bonding between
Metals and non metals
Lithium fluoride
Lithium loses one electron fluorine gains one electron
Forces between lithium and fluoride ion
Electrostatic forces of attraction
Structure of an ionic lattice
Electrostatic forces of attraction
Ionic compounds have high melting points
Lots of evergreen required to overcome strong bonds
Ionic compounds can’t conduct when solid
No free electrons to carry charge
Ionic compounds can conduct when molten
Free elections to carry a charge
Covalent bonding between
Non metals
Covalent bonding consists of
Shared pairs of electrons
Simple covalent molecules
Small molecules with covalent bonds
Simple covalent have low melting points
Weak intermolecular forces
Liquids and gases at room temp
Little energy needed to overcome
