Structure of Iodine

Structure

http://www.webelements.com/ webelements/elements/text/I/xtal.html	http://www.webelements.com/ webelements/elements/text/I/xtal.html
This is the space-filling model of the crystal structure of iodine. This is a better representation of what iodine would look like under a microscope because there isn't any space in actual solid iodine.	This is the ball and stick model of the crystal structure of iodine. This is a good way to see the symmetrical formation of the atom, but is not a good representation of what iodne actually looks like. There would not be that much space between components.

Crystal Structure of Iodine

Iodine is an orthorhombic crystal. This is a rare form of crystal and is difficult to explain. In a general sense, the crystal could be described using a 3-D graph with axes x, y, and z. If z is the vertical axis, it's the longest in a typical orthorhmbic crystal. We'll call x the width and y the depth. Y would typically be the second longest, but it doesn't matter, as long as none of the three are equal. So, an orthorhombic crystal tends to be tall and slim, like the picture to the right.
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Electrons 53
Protons 53
Neutrons 74

This is an illustration showing the energy levels of iodine. It has five energy levels. The black circles with white dashes are electrons. The following table sums up the number of electrons in each level:

First: 2
Second: 8
Third: 18
Fourth: 18
Fifth: 7
http://www.chemicalelements.com/elements/i.html

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