y ttrium - y done by: jae yun class: 7.1 student number:#12

YTTRIUM - Y

Done by: jae yun

Class: 7.1

Student number:#12

YTRRIUM

One of the metals from the periodic tables

HISTORY

The name yttrium is from a vil-lage in Sweden, Ytterby. Also from the word Yttria which means earth containing Yttrium.

Yttrium was discovered by Johan Gadolin in 1794 (Finland).

APPEARANCE Metalic luster Ductile Silver Reactive

metal

PROPERTIES

Symbol: Y Atomic Number: 39 Melting point: 1500 degree Celsius Boiling point: 3336 degree Celsius Electronic shell: [ Kr ] 4d1 5s2

Relatively stable in air until it is divided. Yttrium will melt or burn in air if the temperature exceeds . Natural yttrium has only 89 yttrium.

WHERE IS IT USED ? WHAT IS IT?

When refining metals yttrium is used to re-move impurities.

Used in metal alloys Reacts with water, which makes it decom-

pose and release hydrogen gas.

WHAT IS IT?

Rare earth metal and also a rare chemical

USES

Used in laser systems Potential use in glass and ceramic for-

mulas Deoxider for vanadium and other met-

als Catalyst in the polymerization of ethe-

lyn.

WHERE CAN IT BE FOUND?

Color television Fluorescent lamps Energy saving lamps glasses

HEALTH EFFECTS

Lung embolism: damp and gasses can be in haled with air that has yttrium when it is ex-posed in a very long time.

Cancer: causes lung cancer when yttrium is inhaled

Threat to liver: when yttrium accumulates with the body

EFFECT ON THE ENVIRONMENT? Yttrium leaks in to the environment when the

household items gets thrown away and also in petrol producing industries yttrium is dumped.

Which has negative effects on the water an-imals as their cell membranes will be killed and it will be hard for them to reproduce. Also it has a negative impact on the nerve system.

BIBLIOGRAPHY

Pictures: http://upload.wikimedia.org/wikipedia/commons/thumb/f/fb/Johan_Gadolin.jpg/250px-Johan

_Gadolin.jpg

http://www.webelements.com/_media/elements/element-pics-theo/39_Y_2.jpg

http://www.lenntech.com/images/Periodic-chart-elements/Y-en.h22.jpg

http://jumk.de/mein-pse/yttrium.jpg

http://img.alibaba.com/photo/51002228/Yttrium_Europium_Oxide_rare_earth.jpg

http://www.meriahtek.com.my/Lamp_files/Various%20Type%20of%20Fluorescent%20Lamps.jpg

http://www.destructoid.com/elephant/ul/111835-ms.jpg

http://www.h-e-d.co.uk/images/shot-glass-drinking.jpg

http://tonypritchard.files.wordpress.com/2009/09/periodic_table_of_elements.jpg

BIBLIOGRAPHY

Information Anne, Marie Helmenstine “yttium facts” about 21st April 2010

<http://www.periodic.lanl.gov/elements/39.html>

Unknown “yttrium” periodic 24th April 2010

<http://chemistry.about.com/od/elementfacts/a/yttrium.htm>

Unknown “what is yttrium” wisegeek 24th April 2010

<http://www.wisegeek.com/what-is-yttrium.htm>

Unknown “yttrium – (Y)” lenntech 24th April 2010

<http://www.lenntech.com/periodic/elements/y.htm >