WebElements Periodic Table of the Elements | Zirconium | Essential

information
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· WebElements » Chemistry » Periodic
Table » *Zirconium* » Essential information

** WebElements logo Zirconium **

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*Zirconium: the essentials*

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Zirconium is a greyish-white lustrous metal. The finely divided metal can
ignite spontaneously in air, especially at elevated temperatures. The solid
metal is much more difficult to ignite. The inherent toxicity of zirconium
compounds is low. Hafnium is invariably found in zirconium ores, and the
separation is difficult. Commercial grade zirconium contains from 1 to 3%
hafnium. The hafnium is removed from the zirconium used in the nuclear
power industry.

Zirconium is found in S-type stars, and has been identified in the sun and
meteorites. Analyses of lunar rock samples show a surprisingly high
zirconium oxide content as compared with terrestrial rocks. Some forms of
zircon (ZrSiO[4]) have excellent gemstone qualities.

Table: basic information about and classifications of zirconium.
· Name: Zirconium
· Symbol: Zr
· Atomic number: 40
· Atomic weight: 91.224 (2)
· Standard state: solid at 298 K
· CAS Registry ID: 7440-67-7

· Group in periodic table: 4
· Group name: (none)
· Period in periodic table: 5
· Block in periodic table: d-block
· Colour: silvery white
· Classification: Metallic

zirconium foil sheet
Small and large samples of zirconium foil like this, as well as sheet and
wire, can be purchased from Advent Research Materials via their web
catalogue.

*Zirconium: historical information*

*Zirconium* was discovered by Martin Heinrich Klaproth at 1789 in Berlin,
Germany. Origin of name: from the Arabic word "/zargun/" meaning "/gold
colour/"


Source: www.webelements.com/zirconium/


what is zr on the periodic table


Zirconium Facts - Periodic Table of the Elements

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** Zirconium Facts **

*Zirconium Chemical & Physical Properties*

By Anne Marie Helmenstine, Ph.D.

"Zirconium is a lustrous, corrosion-resistant grayish-white metal."

Zirconium is a lustrous, corrosion-resistant grayish-white metal.

Dschwen, wikipedia.org "This is the electron configuration of a zirconium
atom."

This is the electron configuration of a zirconium atom.

"Zirconium is a lustrous gray transition metal."

Zirconium is a lustrous gray transition metal. This is a photo of zirconium
crystal bars and a cube of highly purified zirconium metal.

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*Periodic Table of the Elements*

*Zirconium*

*Atomic Number:* 40

*Symbol:* Zr

*Atomic Weight:* 91.224

*Discovery:* Martin Klaproth 1789 (Germany); zircon mineral is mentioned in
biblical texts.

*Electron Configuration:* [Kr] 4d^2 5s^2

*Word Origin:* Named for the mineral zircon. Persian /zargun/: gold-like,
which describes the color of the gemstone known as zircon, jargon,
hyacinth, jacinth, or ligure.

*Isotopes:* Natural zirconium consists of 5 isotopes; 15 additional
isotopes have been characterized.

*Properties:* Zirconium is a lustrous grayish-white metal. Finely-divided
metal may


Source: chemistry.about.com/od/elementfacts/a/zirconium.htm

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