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Periodic Table of Elements

 

02/05/09

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Periodic Table


Ga

Gallium

Atomic Number 31

Atomic Symbol Ga

Name Gallium
  Meaning Name comes from the word 'gallius' the Latin name for France and/or a pun on the discoverer's middle name

Group Other metals, p-block metals

Atomic Weight 69.723

Density, g/cubic cm at STP  5.907

Melting Point, °C   29.76

Boiling Point, °C, 1 atm 2403

Naturally Occurring Isotopes Ga-69, Ga-71

Discoverer de Boisbaudran

Year 1875

Ionization Energy, eV 5.9993

Configuration [Ar] 3d10 4s2 4p

Description Very lustrous silver

   

Information
Gallium is one of four elements that can be liquid at room temperature. Since the melting point of Gallium is just under 29C, an ingot can melt in your hand if held for a few minutes.

Joseph's Element Collection
Joseph used to have a sample of Gallium, but sadly, during the move from England to Texas, it melted in the summer heat on the boat transporting supplies. Until he can get a replacement from the Red, Blue, and Green Company, this story is a fill-in.

References:

Holden, Norman E. (March 30, 2004). "History of the origin of the chemical elements and their discoverers." National Nuclear Data Center. Retrieved October 7, 2005 from http://www.nndc.bnl.gov/content/elements.html

"List of elements by boiling point." (September 22, 2005). Wikipedia. Retrieved October 9, 2005 from http://en.wikipedia.org/wiki/List_of_elements_by_boiling_point

"List of elements by density." (September 22, 2005). Wikipedia. Retrieved October 9, 2005 from http://en.wikipedia.org/wiki/List_of_elements_by_density

"List of elements by melting point." (September 22, 2005). Wikipedia. Retrieved October 9, 2005 from http://en.wikipedia.org/wiki/List_of_elements_by_melting_point

"NIST chemistry webBook." (2005). National Institute of Standards and Technology. Retrieved October 6, 2005 from http://webbook.nist.gov/chemistry/

Zucker, M.A.; Kishore, A. R.; Sukumar, R.; and Dragoset, R. A. (July 2005). "Elemental data index."  National Institute of Standards and Technology. Retrieved October 7, 2005 from http://physics.nist.gov/PhysRefData/Elements/cover.html

 


 

 

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