Ionic bonding Non directional bond- strength of bond equal in all directions Conducts electricity when MOLTEN or in SOLUTION(aq) High melting point and.

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Presentation transcript:

Ionic bonding Non directional bond- strength of bond equal in all directions Conducts electricity when MOLTEN or in SOLUTION(aq) High melting point and boiling point hard solids

Covalent bonding The sharing of electrons

Covalent bonding is directional. The strength of the bond is in one direction Covalent structures are low melting point solid, liquids and gases They tend not to be soluble in water and have poor electrical conductivity

The outer shell of hydrogen can only contain a max of two electrons (1s orbital) The electrons are equally shared between the hydrogen's

Oxygen

Nitrogen

Hydrogen fluoride ammonia

Ethene C 2 H 4

Carbon dioxide

Element Bonds HOSNCPHOSNCP Number of electrons in the outer shell

Dative Bonding A covalent bond forms when both electrons come from the same atom

Carbon monoxide

Metallic bonding general characteristics Non directional strong in all directions Good electrical conductivity Malleable (beaten into sheets) and ductile (made into wires)