Ionic+Bonding

Ionic Bonding


 * There is a tendency for Metals to lose electrons and become positively charged.
 * Non-metals gain electrons and become negatively charged ions.
 * Non-metals and Metals bond to form an ion.This process is called Ionic Bonding.
 * Ions are held together by strong electrostatic attraction forces between the positive metal ions and the negative non-metal ions in a giant lattice structure.
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 * Something like this
 * Ionic Bonding is the transfer of electrons from metallic element to non-metal in order to achieve the stable electronic configuration of a noble gas.This results in the formation of positive cation and negative anion.
 * Ionic Compounds have HIGH mp/bp because a lot of energy is required to overcome the strong electrostatic attraction between the oppositely charged ions in the giant ionic lattice.
 * Compounds with ions that are doubly charged have higher mp/bp than those that are singly charged.EG:Magnesium Oxide and Sodium Chloride.More energy is required to overcome the stronger electrostatic attraction between MG2+ and O2- than that between Na+ and CL+ ions.Hence Magnesium Oxide has a higher mp/bp than Sodium Chloride.
 * Ionic compounds can conduct electricity in molten state and aqueous state due to the presence of mobile IONS.
 * When dissolved in water,ionic compounds ionizes to form mobile ions.
 * When melted,the heat energy supplied overcomes some of the electrostatic forces of attraction between oppositely charged ions and hence the ions become mobile.
 * In solid state,the ions are fixed in position by the strong electrostatic attraction between the oppositely charged ions,ABSENCE of mobile ions resulted in the ionic compound being a non-electrical conductor in solid state.
 * Ionic compounds are generally soluble in polar solvents. EG: H20 but not organic solvents)
 * Ionic compounds are brittle.When force is applied,Ions of the same charged are brought together and face electrostatic repulsion.
 * []<-Video showing Ionic Bonding