2. 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

9. Covalent bonding The sharing of electrons

10. 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

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

13. Oxygen

14. Nitrogen

15. Hydrogen fluoride ammonia

16. Ethene C 2 H 4

17. Carbon dioxide

18. Element Bonds HOSNCPHOSNCP 122343122343 Number of electrons in the outer shell 166545166545

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

22. Carbon monoxide

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