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Created page, but more needed in Uses category
{{Element | name=Hafnium | symbol=Hf | anumber=72 | amass=178.49 amu | state=Solid | class=Transition Metals | cstructure=Hexagonal | color=Silver | date=1923 | discname=Dirk Coster & Georg von Hevesy | origname=From the Latin name for [[Copenhagen]], ''Hafnia''. | uses=Due to its ability to absorb neutrons, used in reactor control rods and also as a gas scavenger in vacuum tubes. | obtained=Obtained as a by-product of [[zirconium]] refining. }}
{{Element | name=Hafnium | symbol=Hf | anumber=72 | amass=178.49 amu | state=Solid | class=Transition Metals | cstructure=Hexagonal | color=Silver | date=1923 | discname=Dirk Coster & Georg von Hevesy | origname=From the Latin name for [[Copenhagen]], ''Hafnia''. | uses=Due to its ability to absorb neutrons, used in reactor control rods and also as a gas scavenger in vacuum tubes. | obtained=Obtained as a by-product of [[zirconium]] refining. }}
'''Hafnium''' is considered to be non-toxic. When in powder form it is [[pyrophoric]] (which means, it can spontaneously ignite).
==Properties==
Hafnium is a shinny, [[ductile]] (that is, it can be drawn out into wire) [[metal]]. Chemically this is very similar to the element [[zirconium]]. Hafnium is unaffected by all alkalis and all acids other than from hydrogen fluoride. It does reacts with the [[halogens]] to form [[tetrahalides]], and at high temperatures it reacts with [[carbon]], [[boron]], [[oxygen]], [[nitrogen]], [[sulfur]] and [[silicon]]. <ref>http://www.chemicool.com/elements/hafnium.html</ref>
==Uses==
Pure Hafnium is used primarily in nuclear reactor control rods. However, it's alloys are much more useful. Hafnium carbide is used to line high temperature furnaces, for example. <ref>http://www.chemicool.com/elements/hafnium.html</ref>
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[[Category:Elements]]
[[Category:Elements]]
[[Category:Metals]]
[[Category:Metals]]