Ionic Bonds:
An ionic bond is a specific type of chemical bond that has to have a metal and nonmetal ion through electrostatic attention. It is basically explained as an attraction between two oppositely charged ions. The metal donates one or more electrons, forming a positively charged ion or cation with a stable electron configuration. These electrons then enter the non metal, causing it to form a negatively charged ion, also known as an anion which has a stable electron configuration. The electrostatic attraction between the oppositely charged ions causes them to come together and form a bond. When you get rid of electrons. When you get rid of electrons from the atoms, it becomes endothermic and causes the ions to have a higher energy. There can also be energy changes related with breaking of existing bonds or the addition of more than one electron to form anions. The attraction of the ions to each other lowers their energy.

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Covalent Bonds:
A covalent bond is chemical bonding that is characterized by the sharing of pairs of electrons between atoms, and other covalent bonds. Basically, the attraction-to-repulsion stability that forms between atoms when they share electrons is known as covalent bonding. One type of covalent bond is called a polar covalent bond. Polar covalent bonds are important because these kinds of bonds allow the formation of another kind of weak bond called a hydrogen bond. Water is an example of a molecule that has polar covalent bonds and engages in hydrogen bonding.
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Metallic Bonds:
In the metallic bond, an atom achieves a more stable configuration by sharing the electrons in its outer shell with many other atoms. Metallic bonds are most common in elements where the valence electrons are not very tightly bound with the nucleus, mostly metals, hence the name metallic bonding. In this type of bond, each atom in a metal crystal contributes all the electrons in its valence shell to all other atoms in the crystal.
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Questions:
1. Which of the following type of bonds deals mostly with metals?
a) Ionic Bonds
b) Metallic Bonds
c) Covalent Bonds
d) Polar Covalent Bonds


2. What is the difference between an ionic bond and a covalent bond?


3. Ionic bonds can be basically explained as:
a) an attraction between two oppositely charged ions
b) an attraction between two like charged ions
c) sharing between a pair of electrons
d) electrons are very tightly bound with the nucleus


4. In a metallic bond, each atom in a metal crystal contributes all of its what?






Video Explanation:
This video clearly explains how ionic bonds are formed. It is not very long but it gets the point across. It explains how some elements loose electrons while others gain electrons and then form the ionic bond.


Answers:
1. B
2. An ionic bond is a specific type of chemical bond that has to have a metal and nonmetal ion through electrostatic attention, and a covalent bond is chemical bonding that is characterized by the sharing of pairs of electrons between atoms, and other covalent bonds.
3. A
4. Each atom in a metal crystal contributes all the electrons in its valence shell to all other atoms in the crystal.



Reference List:

What are Ionic Bonds?
URL: http://www.wisegeek.com/what-are-ionic-bonds.htm

What are Covalent Bonds?
URL: http://www.wisegeek.com/what-are-covalent-bonds.htm

Metallic Bonds:
URL: http://dl.clackamas.cc.or.us/ch104-08/metallic.htm