CobaltThis is a featured page

My Nucleus

Cobalt contains 27 protons and 32 neutrons. The atomic mass is 59.
Isotope Half Life
Co-56 77.3 days
Co-57 271.8 days
Co-58 70.9 days
Co-58m 9.1 hours
Co-59 Stable
Co-60 5.3 years
Co-60m 10.5 minutes
Co-61 1.7 hours

My Electrons

Shells: 2,8,15,2
electron configuration: [Ar] 3d7 4s2
# of Elecrtons: 27

My Properties

Melting Point: 1495.0 °C (1768.15 K, 2723.0 °F)
Boiling Point: 2870.0 °C (3143.15 K, 5198.0 °F)
Density @ 293 K: 8.9 g/cm3
Color: silver
Group:Transistion Metal
Crystal Structure: Hexagonal


My Home

ppb (parts per billion; 1 billion = 109), both in terms of weight and in terms of numbers of atoms.

Abundance ppb by weight ppb by atoms
universe
 3000 60
sun
 4000 70
meteorites(carbonaceous) 600000 200000
Crustal rocks
 30000 10000
oceans
 0.08 0.008
stream
 0.2 0.003
humans
 20 2

I am COBALT!


Cobalt
27

Co


My Compounds


Fluorides

  • CoF2: cobalt (II) fluoride

Chlorides


Bromides

  • CoBr2: cobalt (II) bromide

    Iodides

  • CoI2cobalt (II) iodide

    Oxides

  • CoO: cobalt (II) oxide

    Sulfides

  • CoS: cobalt (II) sulphide

My Story:

Date of Discovery: 1737
Discoverer: George Brandt
Name Origin: From the German word kobalt or kobold (evil spirit)

My Jobs

Uses: magnets, ceramics, special glasses


cobaltSilicon - Chemistry with Mr. Olson


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Cobalt 		Latest page update: made by Cobalt , Oct 20 2006, 7:15 PM EDT (about this update About This Update Cobalt Edited by Cobalt


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Anonymous cobalt 0 Mar 19 2010, 1:31 PM EDT by Anonymous
 
Thread started: Mar 19 2010, 1:31 PM EDT  Watch
it was found in sweden
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Anonymous Cobalt's location of discovery 0 Feb 18 2009, 9:56 PM EST by Anonymous
 
Thread started: Feb 18 2009, 9:56 PM EST  Watch
nice but where was cobalt discovered????????
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