Iron Facts

Iron Facts
Iron (Fe) has an atomic number of twenty-six. This highly abundant member of the metals group has been in use since ancient times.
Interesting Iron Facts:
Iron is the sixth most common element in the universe.
Iron is the fourth most abundant element in the Earth's crust by weight.
It is the most abundant element in the total composition of the planet.
Iron is found in both the inner and outer core of Earth.
Iron is found on rocky planets as an aftereffect of fusion in stars of higher mass.
Iron exists in many different oxidation states.
While iron is often found in environments that are low on oxygen, it is highly reactive to both oxygen and water.
Iron often appears as a lustrous silver color, but oxidizes to rust in air.
Pure elemental iron is actually quite soft.
The smelting process hardens iron to a more useable strength.
Steel can be as much as one thousand times harder than pure iron.
Iron is necessary to living organisms, especially animals.
Iron plays a vital role in oxygen transport throughout the body.
Blood's deep red color is due to iron-rich proteins, which are found in all living organisms.
Iron's characteristics are so stable that iron is often used for comparison and calibration.
Iron has four known allotropic forms.
Ferrite is the most stable form of iron under normal conditions.
Iron also has four known isotopes.
Of all of the isotopes, the only one to have a nuclear spin is Fe-57.
Fe-56 is the most abundant isotope of iron.
Iron is the heaviest element to be created through the silicon burning of hot stars.
Iron production for tools began as early as 3600 BC.
There are fewer iron artifacts from that time period due to iron's corrosion.
Iron is mentioned in the Bible in the book of Genesis in reference to tool making.
Iron is actually toxic in high doses, combing with oxygen to form free radicals.

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