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Ionic Bonding.

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Presentation on theme: "Ionic Bonding."— Presentation transcript:

1 Ionic Bonding

2 A. Bond Types 3 Types of Bonds Ionic Bond Covalent Bond
3. Metallic Bond Electron transfer from a metal to a nonmetal Electrons are shared between two nonmetals Electrons are delocalized among metal atoms

3 A. Bond Types NaCl H2O Chemical Formula IONIC COVALENT
Shorthand method used to show the number and type of atoms present in the smallest representative unit of a substance. NaCl H2O IONIC COVALENT

4 B. Ionic compounds Also known as a SALT NaCl KNO3 Ionic compound
A compound composed of positive and negative ions. Also known as a SALT Binary Compound (Salt) Ternary Compound (Salt) NaCl KNO3

5 B. Ionic Compounds Ionic Bonds – show transfer of electrons from metal to nonmetal Metals tend to give up electrons Nonmetals tend to receive electrons The result is the formation of positive and negative ions that are bonded by electrostatic attraction

6 C. Lewis Dot Structures Na Cl Lewis Dot of the Atom
Ionic Bonds are the transferring of electrons from the metal to the nonmetal. Stability is the name of the game. Each element becomes an ion to have a noble gas configuration in the compound Lewis Dot of the Atom Cl Na sodium atom Chlorine atom

7 C. Lewis Dot Structures Cl Na Na+ Cl
Metal must become a cation by giving up an electron. Nonmetal must receive an electron and become an anion. The ionic bond is an electrostatic attraction between the positive and negative ion Cl Na Sodium atom Chlorine atom Na+ Sodium chloride Cl -

8 C. Lewis Dot Structures Cl Mg Mg2+ Cl MgCl2
Ion – an atom or group of atoms with a charge ( + or - ). Cation – positive ion formed from a metal giving up 1-3 electrons Anion – negative ion formed from a nonmetal gaining 1-3 electrons. Cl - Cl Mg MgCl2 Mg2+

9 C. Lewis Dot Structures +1 +2 +3 -4 + -3 -2 -1 He
Oxidation Number - a “+” or “-” number given to an atom or group of atoms that represent the number of electrons that have been given (+) or received (-). +1 +2 +3 -4 + -3 -2 -1 He X X X X X X X X

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