By: Bella


This flyer will talk about the element iodine. It will include information such as where it comes from, who discovered this element, and other basic information.

What is iodine?

Iodine is a solid, chemical element which has a dark purpley-black colour in room temperature, purple colour in a hydrocarbon solvent, and is yellowish-brown in water. It is an element that is needed to produce the thyroid hormone. Iodine is a non-metallic element neather is it radioactive and synthetic.

Periodic table

The picture above shows you iodine on the periodic table. Here is some basic information about iodine:

Chemical name= iodine

Chemical symbol= I

Atomic number= 53

Atomic weight= 126.90

Boiling point= 363.7°F (184.3°C)

Melting point= 236.3°F (113.5°C)

The name iodine comes from Greek ἰοειδής ioeidēs, meaning violet or purple, due to its purple colour in a hydrocarbon solvent.

Where is iodine found?

The body does not crate its own iodine. Iodine is found and produced in your diet. It is found in foods and drinks such as:

  • Cheese
  • Eggs
  • Seaweed
  • Yogurt
  • Salt water fish

And many more….


Most people use iodine for medicine


Iodine is quite safe for most people although it can cause side effects. These side effects include:
  • Swelling of the lips and face (angioedema)
  • Severe bleeding and bruising
  • Fever
  • Allergic reactions including hives
  • And possibly death
If iodine is used directly on your skin, stains, allergic reactions, and other effects can occur.


Compared to other elements, iodine is a relatively cheap element. Although, iodine has doubled its price from the past 5 years and is approximately $30/kg. Iodine is less in value due to the large amount that we can collect therefore, it not a rare object.


Iodine was first discovered by Bernard Courtois in the year 1811 in France. He was trying to extract potassium chloride from seaweed when he discovered iodine. After taking the potassium out, he added sulfuric acid to the left over liquid. It then produced a purple vapor, which thickened into dark crystals. These were the first crystals of iodine ever made.


oxygen related..

Iodine diagram

Below is a hand made diagram of a iodine particle. As you can see there are:

Protons= 53

Neutrons= 74

Electrons= 53