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Periodic Table of Elements

 

02/05/09

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Periodic Table


H

Hydrogen

Atomic Number 1

Atomic Symbol H

Name Hydrogen
  Meaning Named for the Greek words 'hydro' + 'genes' meaning 'water forming'

Group Non-metals

Atomic Weight 1.00794

Density, g/cubic cm at STP  0.00008988

Melting Point, °C -258.975

Boiling Point, °C, 1 atm -253

Naturally Occurring Isotopes H-1, H-2 (deuterium), H-3 (tritium)

Discoverer Cavendish

Year 1766

Ionization Energy, eV 13.5984

Configuration 1s

Description Colorless, odorless gas at STP


 

Information
Hydraogen is a light, flammable gas, that combines with Oxygen to make water (H2O). The sun is almost completely hydrogen, which gives off heat from the intense chemical reactions. A hydrogen based bomb (H-Bomb), which was developed in the United States in 1952 during the Nuclear Arms Race, has roughly 1,000 times more explosive power than a standard nuclear bomb.

Joseph's Element Collection
Joseph has not yet obtained a sample of Hydrogen.

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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