Ionic Bonding. As we have said, electron and their orbits are very important to the behavior of an atom. For example………

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Presentation transcript:

Ionic Bonding

As we have said, electron and their orbits are very important to the behavior of an atom. For example………

Ionic Bonding Sodium 2 Electrons in Orbit 8 Electrons in Orbit 1 Stupid and Annoying Electron in Orbit

Ionic Bonding That one Stupid and annoying Electron in its outer orbit makes sodium unstable and reactive. 1 Stupid and Annoying Electron in Orbit

Ionic Bonding Sodium (Na) really wants to shed the electron so that it has a full outer orbit. When Na does shed the electron, Na has one more proton than electrons so it has a net positive charge… escaping electron

Ionic Bonding When Na looses its outer electron it becomes and ion. Ion – An atom with an overall electrical charge 10 electrons + 11 protons = Positive Ion

Ionic Bonding In this case, we have more protons than electrons so the net charge is positive, so it is called….. Cation – An ion with a positive charge 10 electrons + 11 protons = Positive Ion

Ionic Bonding Now let’s look at the other form of ion. For example….. Chlorine (Cl)

Ionic Bonding Chlorine (Cl) 2 Electrons in Orbit 8 Electrons in Orbit 7 Stupid and Annoying Electrons in Orbit

Ionic Bonding Chlorine (Cl) really wants to gain an electron so that it has a full outer orbit. When Cl does gain an electron, Cl has one fewer protons than electrons so it has a net negative charge… joining electron

Ionic Bonding In this case, we have less protons than electrons so the net charge is negative, so it is called….. Anion – An ion with a Negative charge 18 electrons + 17 protons = Negative Ion

Ionic Bonding When the electron jumps from the Na to the Cl, the atoms become Ions. One is cation the other a anion. These two charged atoms then stick together forming a compound. Compound –A substance which is made of two or more kinds of atoms or ions that have joined together.

Ionic Bonding In the case of our Na + and Cl -, the attraction between positive and negative ions is very strong. It is called an Ionic Bond. Ionic Bond –A chemical link between two atoms caused by the electrostatic force between oppositely- charged ions in an ionic compound.

Ionic Bonding Electrostatic Force –The forces between particles that are caused by their electric charges. Na + is a positive ion….cation Cl - is a negative ion…anion

Ionic Bonding When Na + and Cl - get close to each other they arrange themselves into a pattern called a lattice Lattice –Organized arrangement of ions

Ionic Bonding Lattice

Ionic Bonding Full Circle….. Anybody recognize this –(NH 4 ) 3 PO 4