IONIC BONDING

• This type of bonding occurs between a METAL and a NON-METAL.
• IONIC BONDING involves the TRANSFER of electrons FROM a METAL atom TO a NON-METAL atom. 
• The METAL atom LOSES electrons to become a POSITIVELY charged ion, while the NON-METAL atom GAINS those electrons to become a NEGATIVELY charged ion.
• These ions are then STRONGLY attracted to each other by ELECTROSTATIC forces, creating an IONIC BOND.

COVALENT BONDING

• This type of bonding occurs between NON-METALS.
• COVALENT BONDING involves atoms SHARING pairs of electrons, so that the atoms can achieve a FULL OUTER SHELL and become STABLE.
• These bonds form because the positively charged NUCLEI are attracted to the shared pairs of ELECTRONS by ELECTROSTATIC FORCES.

METALLIC BONDING 

• This type of bonding occurs between METALS.
• The outer shell electrons are DELOCALISED and free to move. This creates a SEA OF DELOCALISED ELECTRONS.
• Within the sea of electrons, there are POSITIVE METAL IONS which are arranged in a REGULAR PATTERN in a GIANT