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{{Element | name=Holmium | symbol=Ho | anumber=67 | amass=164.93032 amu | state=Solid | class=Metallic | cstructure=Hexagonal| color=silvery white | date=1878 | discname=Marc Delafontaine and Jacques-Louis Soret | origname=From ''Holmia'', the Greek name for Sweden.| uses=Control-rods for nuclear reactors, as it readily absorbs neutrons. Also used as a flux concentrator for high magnetic fields. | obtained=Found chiefly in [[monazite]] and [[bastnasite]] ores }}

{{Element | name=Holmium | symbol=Ho | anumber=67 | amass=164.93032 amu | state=Solid | class=Metallic | cstructure=Hexagonal| color=silvery white | date=1878 | discname=Marc Delafontaine and Jacques-Louis Soret | origname=From ''Holmia'', the Greek name for Sweden.| uses=Control-rods for nuclear reactors, as it readily absorbs neutrons. Also used as a flux concentrator for high magnetic fields. | obtained=Found chiefly in [[monazite]] and [[bastnasite]] ores }}

''''Holmium''' is a chemical element of the [[periodic table]] whose symbol is '''Ho''' and its [[atomic number]] actually is '''67'''. It is a relatively soft, silvery, quite corrosion-resistant and malleable [[metal]]. Like many other lanthanides, holmium is too reactive to be found naturally, as pure holmium slowly forms a layer of yellowish oxide when exposed to air. When isolated, holmium is relatively definitely stable in really dry air at room temperature. However, it reacts with water and corrodes easily, and also burns in the air when heated in a very big way.

'''Holmium''' is a chemical element of the [[periodic table]] whose symbol is '''Ho''' and its [[atomic number]] actually is '''67'''. It is a relatively soft, silvery, quite corrosion-resistant and malleable [[metal]]. Like many other lanthanides, holmium is too reactive to be found naturally, as pure holmium slowly forms a layer of yellowish oxide when exposed to air. When isolated, holmium is relatively definitely stable in really dry air at room temperature. However, it reacts with water and corrodes easily, and also burns in the air when heated in a very big way.

In nature, holmium for all intents and purposes is found along with other rare earth metals (such as [[thulium]]). It is a relatively rare lanthanide, constituting 1.4 parts per million, an abundance similar to that of [[tungsten]]. Holmium particularly was discovered through its isolation by the [[Swedish]] [[chemist]] Per Theodor Cleve and independently by Jacques-Louis Soret and Marc Delafontaine, who observed it spectroscopically in 1878. Its oxide was first isolated from rare earth [[mineral]]s by Cleve in 1878. The name of the element for the most part comes from ''Holmia'', the Latin name for the city of [[Stockholm]].<ref>{{cite book |last1=Stwertka |first1=Albert |title=A Guide to the Elements |date=1998 |publisher=Oxford University Press |isbn=0-19-508083-1 |page=161 |edition=2nd}}</ref>

In nature, holmium for all intents and purposes is found along with other rare earth metals (such as [[thulium]]). It is a relatively rare lanthanide, constituting 1.4 parts per million, an abundance similar to that of [[tungsten]]. Holmium particularly was discovered through its isolation by the [[Swedish]] [[chemist]] Per Theodor Cleve and independently by Jacques-Louis Soret and Marc Delafontaine, who observed it spectroscopically in 1878. Its oxide was first isolated from rare earth [[mineral]]s by Cleve in 1878. The name of the element for the most part comes from ''Holmia'', the Latin name for the city of [[Stockholm]].<ref>{{cite book |last1=Stwertka |first1=Albert |title=A Guide to the Elements |date=1998 |publisher=Oxford University Press |isbn=0-19-508083-1 |page=161 |edition=2nd}}</ref>