Physical Properties

The atomic mass of iron is 55. 845 and the atomic radius is 156 pm. it has a density of 7.874, a melting point 1538 degrees Celsius, and a boiling point of 2861 degrees Celsius. At room temperature iron is solid. It is a grey looking shiny metal that rusts in damp air. It is also a very good conductor. It has a high malleability and a hardness level of 4-5.

location on the periodic table

Iron is located in the middle of the fourth row.

Chemical properties

Iron cannot be lit on fire but after getting hot it can put other things on fire. it reacts when in contact with water or damp air.

Atomic Structure

Atomic number: 26

Mass Number: 56

Protons: 26

Neutrons: 30

Electrons: 26

History and discovery

Iron has been known since the ancient times. People started making tools out of iron before 1700's. It was first discovered by locals in Mexico when a part of Xiquipilco (a Meteorite) fell on Earth.

Applications and uses

Most of iron is used to make steel. It can also be used to make pipes, valves and pumps etc. Fe-57 and Fe-58 are the mostly used Fe isotopes. Studies have included that these isotopes are used to treat iron loss, conditions for effective iron absorption, interventions for anemia and genetic iron control.

Name and symbol

Iron gets its name from a word called ferrum which also means holy metal. Iron is called holy metal because the swords used during the crusades were made out of it.

Does iron form specific compounds or alloys?

Yes, it is used to make steel. It is also used to make bridges, electricity pylons, rifle barrels and cutting tools.

Fun Facts

  • Iron is usually used to make steel.
  • Iron is not always magnetic.
  • Iron is a very important mineral but too much of it can be poisonous.
  • Iron is formed when fusion in stars occur. The stars have to be large enough for the process to take place.


Royal society of chemistry : "Periodic Table." Royal Society Of Chemistry. royal society of the chemistry, Jan. 2015. Web. 4 Jan. 2016. <>. Marie, Anne. "10 Iron Facts.", n.d. Web. 4 Jan. 2016. <>.

Elements Book: Gray, Theodore W. (2009). The Elements: A visual exploration of every known atom in the universe. New York: Black Dog & Leventhal Publishers, Inc.

Element Card: Gray, Theodore W. (2008). The Photographic Card Deck of the Elements.