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mineralogy elements Cr Chromium

Cr - Chromium - TRANSITION METAL

Chromium is a chemical element that is found in the metal group of the periodic table of elements, symbolized by the symbol Cr and having an atomic number of 24. It is a metallic element that has interesting properties.

Chromium is a hard but relatively flexible metal. It has good ductility and is very resistant to corrosion. It has a metallic white color and a characteristic gloss.

Chromium is a ductile and malleable metal that is often used in alloys with other metals to give them corrosion resistance and durability. It is also used for its ability to produce brilliant color and heat resistant coatings.

Chromium is widely used for its resistance to corrosion and abrasion. It is commonly used for making pipes, tanks, refrigerators, stoves, ovens and vehicles. It is also used to make automotive components, medical instruments and electronic devices. Chromate complexes are also used as colorants and anti-corrosives for industrial coatings.
1857°
2482°
51.9961
-2
-1
1
2
3
4
5
6
24
Cr
[Ar] 3d5 4s1
2
8
13
1
1.66
6.7665
Synthetic
Radioactive
Liquid
Gaseous
Chromium Electronic configuration diagram
Electronic configuration diagram

Name Chromium
Number 24
Atomic 51.9961
Symbol Cr
Fusion 1857
Boiling 2482
Density 7.15
Period 4
Group 6
Discovery 1797 Vauquelin
Abundance 102
Radius 1.9
Electronegativity 1.66
Ionization 6.7665
Number of isotopes 9
Electronic configuration [Ar] 3d5 4s1
Oxidation states -2,-1,1,2,3,4,5,6
Electron by energy level 2,8,13,1

Mineral Hardness Density
Andreyivanovite
Ankangite 6.50 / 6.50 4.44
Ardennite-(V) 6.00 / 7.00 3.55
Barbertonite 1.50 / 2.00 2.10
Batisivite 7.00 / 7.00 4.62
Bentorite 2.00 / 2.00 2.03
Bouazzerite 2.81
Bracewellite 5.50 / 6.50 4.45
Brezinaite 3.50 / 4.50 4.12
Bushmakinite 3.00 / 3.50 6.22
Carlosruizite 2.50 / 3.00 3.42
Carlsbergite 7.00 / 7.00 5.90
Carmichaelite 6.00 / 6.00 4.13
Cassedanneite 3.50 / 3.50 6.00
Caswellsilverite 1.00 / 2.00 3.21
Chromatite 3.14
Chrombismite 3.00 / 3.50 9.80
Chromceladonite 1.00 / 2.00 2.90
Chromferide 4.00 / 4.00 6.69
Chromio-pargasite 6.00 / 6.00 3.12
Chromite 5.50 / 5.50 4.50
Chromium 7.50 / 7.50 7.20
Chromium-dravite 7.00 / 7.50
Chromo-alumino-povondraite 7.50 / 7.50 3.23
Chromomphacite
Chromphyllite 3.00 / 3.00 2.88
Chromschieffelinite 2.00 / 2.00 5.89
Cochromite 7.00 / 7.00 5.22
Crichtonite 5.00 / 6.00 4.46
Crocoite 2.50 / 3.00 5.90
Cronusite 1.50 / 1.50 2.51
Cuprokalininite 4.50 / 5.00 4.16
Daubréelite 4.50 / 5.00 3.81
Davidite-(Ce) 6.00 / 6.00 4.42
Davidite-(La) 6.00 / 6.00 4.42
Deanesmithite 4.50 / 5.00 8.00
Dessauite-(Y) 6.50 / 7.00 4.68
Dietzeite 3.50 / 3.50 3.62
Dissakisite-(La) 6.50 / 7.00 3.79
Dukeite 3.00 / 4.00 7.17
Edoylerite 7.00
Embreyite 3.50 / 3.50 6.45
Eskolaite 8.00 / 8.50 5.18
Ferchromide 6.50 / 6.50 6.00
Ferrohögbomite-2N2S 6.00 / 7.00
Florensovite 5.00 / 5.00 4.00
Fornacite 2.00 / 3.00 6.27
George-ericksenite 3.00 / 4.00 3.04
Georgerobinsonite
Grimaldiite 3.50 / 4.50 4.11
Guyanaite 4.53
Hapkeite
Hashemite 3.50 / 3.50 4.59
Hawthorneite 6.00 / 6.50 5.00
Heideite 3.50 / 4.50 4.10
Hemihedrite 3.00 / 3.00 6.42
Iquiqueite 2.00 / 2.00 2.05
Iranite 3.00 / 3.00 5.80
Isovite 8.00 / 8.00 7.40
Joegoldsteinite 3.71
Kalininite 5.00 / 5.00
Kassite 5.00 / 5.00 3.42
Keilite
Khristovite-(Ce) 5.00 / 5.00 4.05
Knorringite 6.00 / 7.00 3.76
Kosmochlor 6.00 / 7.00 3.60
Krinovite 6.00 / 7.00 3.38
Lakargiite 8.00 / 8.50 4.59
Lindsleyite 7.50 / 7.50 4.63
Lópezite 2.50 / 2.50 2.69
Loveringite 7.50 / 7.50 4.41
Macquartite 3.50 / 3.50 5.49
Magnesiochromite 5.50 / 5.50 4.20
Magnesiosadanagaite 5.50 / 6.00 3.00
Manganochromite 5.50 / 5.50 4.86
Mapiquiroite 6.00 / 6.00
Mariinskite 8.50 / 8.50 4.25
Mathiasite 7.50 / 7.50 4.60
Mcconnellite 5.50 / 5.50 5.49
Molybdofornacite 2.00 / 3.00 6.60
Mongshanite 5.00 / 6.00
Mountkeithite 2.00 / 2.00 2.12
Murchisite 4.22
Natalyite 7.00 / 7.00 3.55
Nichromite 6.00 / 6.50 5.24
Olkhonskite 8.00 / 8.00 4.48
Oxy-chromium-dravite 7.50 / 7.50 3.30
Painite 8.00 / 8.00 4.00
Petterdite 2.00 / 2.00 3.97
Phoenicochroite 2.50 / 2.50 7.01
Polyakovite-(Ce) 5.50 / 6.00 4.75
Putnisite 1.00 / 2.00 2.23
Qusongite 9.50 / 9.50 15.84
Redingtonite 2.00 / 2.00 1.76
Redledgeite 6.00 / 7.00 3.72
Reynoldsite 4.50 / 4.50 6.57
Rilandite 2.00 / 3.00
Santanaite 4.00 / 4.00 9.16
Schöllhornite 1.50 / 2.00 2.70