Periodic Table of Elements

03/24/07

Sb

Antimony

Atomic Number

51

Atomic Symbol

Sb

	Name	Antimony
	Meaning	Name comes from the Greek 'anti + monos' meaning 'not alone'; symbol from the Greek 'stibi' meaning 'mark'

Group

Metalloids

Atomic weight

121.76

Density, g/cubic cm at STP

6.685

Melting Point, °C

630.9

Boiling Point, °C, 1 atm

1380

Naturally Occurring Isotopes

Sb-121, Sb-123

Discoverer

Unknown

Year

Early historic times

Ionization Energy, eV

8.6084

Configuration

[Kr] 4d10 5s2 5p3

Description

Dark grey, metallic looking; similar to lead

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