Iron Element in Periodic Table | Atomic Number Atomic Mass


Iron Element:

The chemical element Iron is a lustrous, ductile, malleable, silver-gray metal. Its atomic number is 26 and indicated by the symbol Fe. In the periodic table it is a d-block transition metal, belongs to the group 8 and a member of period 4. After the In the Earth’s crust Iron is the fourth most abundant element, by mass and much of Earth's core is thought to be composed of iron with nickel and sulfur. In the crust the free metal is rare because it tends to oxidize, but its oxides are pervasive and represent the primary ores. Most of the Fe in the crust is found combined with oxygen as iron oxide minerals such as hematite, magnetite and siderite. Many igneous rocks also contain the sulfide minerals pyrrhotite and pentlandite. Naturally occurring iron has 4 stable isotopes such as 54Fe, 56Fe, 57Fe, 58Fe.

Uses Of Iron Element:

  • Most of the Fe is used to manufacture steel and other alloys important in construction and manufacturing.
  • Iron is an enigma – it rusts easily, yet it is the most important of all metals. 90% of all metal that is refined today is iron.
  • Fe is essential element for all human beings. It is vital for the functioning of living organisms. About 4 grams of iron is present in the average human. A lot of this is in haemoglobin, in the blood. Haemoglobin carries oxygen from our lungs to the cells, where it is needed for tissue respiration. A lack of iron will cause anaemia to develop.


Iron Element Information:

Discovery year: before 5000 BC

Atomic number:26

Relative atomic mass: 55.845 

Electron configuration: [Ar] 3d6 4s2

Block: d-block

Other elements in the same block:

Scandium, Titanium, Vanadium, Chromium, Manganese, Cobalt, Nickel, Copper, Zinc, Yttrium, Zirconium, Niobium, Molybdenum, Technetium, Ruthenium, Rhodium, Palladium, Silver, Cadmium, LanthanumHafnium, Tantalum, Tungsten, Rhenium, Osmium, Iridium, Platinum, Gold, Mercury, Actinium, Rutherfordium, Dubnium, Seaborgium, Bohrium, Hassium, Meitnerium, Darmstadtium, Roentgenium and  Copernicium are the elements in the same block.

Period: period 4

Other elements in the same period:

Potassium, Calcium, Scandium, Titanium, Vanadium, Chromium, Manganese, Cobalt, Nickel, Copper, Zinc, Gallium, Germanium, Arsenic, Selenium, Bromine and Krypton are the elements in the same period.

Group: group 8

Other elements in the same group:

 Ruthenium, Osmium and Hassium are the elements in the same group

Other elements in the same orbital:

Scandium, Titanium, Vanadium, Chromium, Manganese, Cobalt, Nickel, Copper and Zinc are the elements in the same orbital.

Allotropes: none

Key isotopes: 56Fe 

Melting point: 1538°C, 2800°F, 1811 K

Boiling point: 2861°C, 5182°F, 3134 K

Element category: transition metal

Density (g cm−3): 7.87

CAS number: 7439-89-6

Color: lustrous metallic with a grayish tinge


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