Difference between revisions of "Chromium"
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{{Element | name=Chromium | symbol=Cr | anumber=24 | amass=52.0 amu | state=solid | class=Transition metal | cstructure=Cubic | color=Gray | date=1797| discname=[[Louis Vauquelin]] | origname=From the Greek word ''chrôma'' (color) | uses=Stainless steel | obtained=Chromite}} | {{Element | name=Chromium | symbol=Cr | anumber=24 | amass=52.0 amu | state=solid | class=Transition metal | cstructure=Cubic | color=Gray | date=1797| discname=[[Louis Vauquelin]] | origname=From the Greek word ''chrôma'' (color) | uses=Stainless steel | obtained=Chromite}} | ||
[[Category:Metals]] | [[Category:Metals]] | ||
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| + | '''Chromium''' (Cr) is a [[chemical]] [[element]] found at number 24 on the [[periodic table]]. It is a hard, lustrous gray transition metal used in plating processes and the production of stainless steel. | ||
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| + | Chromium is generally found in nature in the mineral ''chromite'' (FeO - Cr<sub>2</sub>O<sub>3</sub>), but can also be found in [[crocoite]] (PbCrO<sub>4</sub>). It is also a essential mineral for life; a deficiency will lead to a deficiency in glucose tolerance, as several chromium (III) compounds have been found to enhance the effectiveness of insulin. However, some chromates are hazardous to health when injested/inhaled. | ||
Revision as of 00:12, March 3, 2009
| Chromium | |
|---|---|
| Properties | |
| Atomic symbol | Cr |
| Atomic number | 24 |
| Classification | Transition metal |
| Atomic mass | 52.0 amu |
| Other Information | |
| Date of discovery | 1797 |
| Name of discoverer | Louis Vauquelin |
| Name origin | From the Greek word chrôma (color) |
| Uses | Stainless steel |
| Obtained from | Chromite |
Chromium (Cr) is a chemical element found at number 24 on the periodic table. It is a hard, lustrous gray transition metal used in plating processes and the production of stainless steel.
Chromium is generally found in nature in the mineral chromite (FeO - Cr2O3), but can also be found in crocoite (PbCrO4). It is also a essential mineral for life; a deficiency will lead to a deficiency in glucose tolerance, as several chromium (III) compounds have been found to enhance the effectiveness of insulin. However, some chromates are hazardous to health when injested/inhaled.