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Cobalt

Discussion board (posts 41-60)

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E-mail address katharine - 10/1/2007 4:02:56 PM

what is the freezing point of the element cobalt?

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E-mail address j - 9/28/2007 3:55:10 AM

  E-mail address ANNE - 5/22/2000 2:50:01 AM
  DOES ANYONE KNOW THE NUMBER OF ELECTRONS IN COBALT FOR MY SON'S PROJECT?

27

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E-mail address Samantha - 9/28/2007 1:52:46 AM

How did Georg Brandt discover cobalt?

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kjdshf - 9/13/2007 5:45:44 PM

what family is the element cobalt from

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E-mail address Doris - 9/7/2007 11:16:55 AM

it would help if you could show the color of the element. (ie neon is yellow and oxygen is red.)

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E-mail address donna - 9/7/2007 3:05:41 AM

for cobalt what is the state of matter???

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mack - 5/13/2007 11:35:02 PM

how was cobalt discovered

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E-mail address william - 1/25/2007 1:25:13 AM

what background is there on the man who discovered it?

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E-mail address arvie - 1/14/2007 2:48:59 PM

  E-mail address Hailee - 11/5/2006 8:22:04 AM
  Hi, my names Hailee and i have to do a project on cobolt i have most of the answers for the questions but i am stuck on a few if you know the answer to any of them please reply and let me know thank you for your help ...

1. contry were cobolt was discoverd?
2. state of matter of cobolt?
3. names of group/family members?
4.perioud?
5. type of element?

what is the state of matter of cobalt

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anonymous - 12/22/2006 2:23:00 AM

  Bob - 10/27/2006 3:54:45 AM
  Wat iz Cobalts state @ room temp.?

a solid at room temp

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E-mail address jessica - 12/18/2006 6:26:14 AM

can some one tell me the molar mass for cobalt

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qhrider4567 - 12/14/2006 3:04:49 PM

What is the freezing point of cobalt? Please write back A.S.A.P.!

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you know - 11/12/2006 8:08:49 PM

  E-mail address ANNE - 5/22/2000 2:50:01 AM
  DOES ANYONE KNOW THE NUMBER OF ELECTRONS IN COBALT FOR MY SON'S PROJECT?

it is 27

  Reply

E-mail address Hailee - 11/5/2006 8:22:04 AM

Hi, my names Hailee and i have to do a project on cobolt i have most of the answers for the questions but i am stuck on a few if you know the answer to any of them please reply and let me know thank you for your help ...

1. contry were cobolt was discoverd?
2. state of matter of cobolt?
3. names of group/family members?
4.perioud?
5. type of element?

  Reply

Bob - 10/27/2006 3:54:45 AM

Wat iz Cobalts state @ room temp.?

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anonymous - 10/25/2006 3:26:13 PM

does any one know where to find more information about george brandt at because i cant find anything and its hard

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??? - 10/20/2006 4:28:49 AM

Anyone else has any other questions about cobalt or just wants to know about other elements, I'm avalible at Doneskis@hotmail.com. :D

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??? - 10/20/2006 4:25:28 AM

Element: Cobalt
Symbol: Co
Atomic Weight: 58.9332
Melting Point: 1495 Celsius
Boiling Point: 2927 Celsius

Swedish chemist, Georg Brandt discovered cobalt in about 1735.

From the German word for goblin or evil spirit, kobald and the Greek word for mine, cobalos.

Although cobalt is used in electroplating to give objects an attractive surface that resists oxidation, it is more widely used to form alloys. Alnico, an alloy consisting of aluminum, nickel and cobalt is used to make powerful permanent magnets. Stellite alloys, which contain cobalt, chromium and tungsten, are used to make high-speed and high temperature cutting tools and dyes. Cobalt is also used to make alloys for jet engines and gas turbines, magnetic steels and some types of stainless steels.

Cobalt-60, a radioactive isotope of cobalt, is an important source of gamma rays and is used to treat some forms of cancer and as a medical tracer. Cobalt-60 has a half-life of 5.27 years and decays into nickel-60 through beta decay.

That should pretty much cover whatever people need to know.

-???

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E-mail address magbe - 10/13/2006 3:14:14 AM

what is the element cobalt used for in ever day life. please help!!!

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E-mail address Alyssa - 9/30/2006 3:52:52 PM

Im doing a science project on cobolt.Can you help me learn about cobolt.

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