Iron

Iron
Iron
Symbol Fe
Atomic Number 26
Atomic Mass 55.85 g.mol -1
Discovered by The ancients

Chemical Properties Of Iron

Group 8 Melting point 1536 °C
Period 4 Boiling point 2861 °C
Block d Density (g cm−3) 7.8 g.cm-3 at 20°C
Atomic number 26 Relative atomic mass 55.845
State at 20°C Solid Key isotopes 56Fe
Electron configuration [Ar] 3d64s2 CAS number 7439-89-6
ChemSpider ID 22368 ChemSpider is a free chemical structure database

What is iron?

  • Iron is a metal, an element of group VIII of the periodic table. It is a lustrous, ductile, malleable, silver-gray in color. It is the tenth most abundant element in the universe. It is found in a major amount at the core of the Earth in a molten form.

Uses Of iron

  • It is used to manufacture steel and also used in civil engineering like reinforced concrete, girders etc.
  • Iron is used to make alloy steels like carbon steels with additives such as nickel, chromium, vanadium, tungsten, and manganese.
  • These are used to make bridges, electricity pylons, bicycle chains, cutting tools and rifle barrels.
  • Cast iron contains 3–5% carbon. It is used for pipes, valves, and pumps.
  • Iron catalysts are used in the Haber process for producing ammonia.
  • Magnets can be made of this metal and its alloys and compounds.

Properties Of iron

  • It rusts in damp air, but not in the dry air.
  • It dissolves readily in dilute acids.
  • At room temperature, this metal is in the form of ferrite or α-form.
  • At 910°C, it changes to γ-iron, which is much softer in nature.
  • It melts at 1536°C and boils at 2861°C.
  • Being a metal is magnetic in nature.

Certain Facts About Iron

  • An average human body contains about 4 grams of this iron in the form of hemoglobin, in the blood.
  • It is the 6th most common element in the universe.
  • There are four known allotropic forms of iron.

Practise This Question

Which of the following statements are true for Leaching?