Periodic Table of the Elements
Menu
Periodic Table
Link to us
Contact

Search


 

Cobalt

Discussion board (posts 61-80)

>> Back to key information about the element

Name:
E-mail:
Text:
Please rewrite this verification code:
 
 
 


E-mail address ceren koca - 12/4/2008 3:31:35 AM

symbol: co
atomic number: 27
atomic mass: 58.93
protons: 27
neutrons: 32
electrons: 27
melting point: 1495.C
boiling point: 2927.C
normal phase: solid
cost: $21.00 for 100grams
Classification: metal
Element belongs to: platinum family
Origin of name Kobalt or Kobold
Discovered by Georg Brandt in 1735
Interesting info:
(1)Cobalt compounds have been used for centuries to impart a rich blue color to glass,glazes and ceramics.

(2)Cobalt has been detected in Egyptial sculpture and persian jewelry from the millennium BC,in the ruins of pompeir. Also in China.

(3)The word cobalt is derived from the erman Kobalt from Kobold meaning Goblin.

(4)Cobalt 60 is used in cancer therapy. It is a gamma ray source.

I hope that helped alot i did this for science to get a better mark and i did well hope that help.

  Reply

E-mail address Helena - 12/2/2008 2:39:35 AM

What is the freezing point of Colbat?

  Reply

E-mail address Pepe Calvi - 11/1/2008 6:20:56 PM

in which conditions did george brandt work when he isolated cobalt?
which process did he use?
in what kind of laboratory did he work?

(e.g. the curies worked in a laboratory with very poor hygenic conditions)

thank you.

  Reply

E-mail address maurizio calvi - 11/1/2008 6:07:25 PM

how did Gerge Brandt isolate cobalt.
please reply asap.
many thanks

  Reply

E-mail address maurizio calvi - 11/1/2008 6:01:20 PM

How Brandt discovered Cobalt?

  Reply

Alisha - 10/17/2008 9:11:10 PM

What is the Atomic mass and weight of cobalt?

  Reply

E-mail address nicole - 10/16/2008 9:43:53 PM

  E-mail address Olivia - 10/16/2008 1:59:45 AM
  How did Georg Brandt discover cobalt?

Please Answer A.S.A.P.

he didn't really discover it he just isolated it. it has been used by pretty much everyone even the persians and the egyptians!

  Reply

E-mail address Olivia - 10/16/2008 1:59:45 AM

How did Georg Brandt discover cobalt?

Please Answer A.S.A.P.

  Reply

E-mail address Anonymous =] - 10/16/2008 1:57:46 AM

How did Georg Brandt discover cobalt?

  Reply

sami - 9/24/2008 10:00:25 PM

  qhrider4567 - 12/14/2006 3:04:49 PM
  What is the freezing point of cobalt? Please write back A.S.A.P.!

the freezing and melting point is the same so it is 1768 K

  Reply

E-mail address Tiara Ignacio - 4/19/2008 1:41:54 PM

For the chemical element cobalt, what is the state of matter?

  Reply

E-mail address Roxie - 4/1/2008 3:08:13 AM

  E-mail address magbe - 10/13/2006 3:14:14 AM
  what is the element cobalt used for in ever day life. please help!!!

Cobalt is used in Stainless Steel and magnets, glass, cutting tools, jet turbines, generators etc. It is also used in medicine, it has Vitamin B12 and helps the blood.

  Reply

E-mail address Roxie - 4/1/2008 3:05:51 AM

  E-mail address Samantha - 9/28/2007 1:52:46 AM
  How did Georg Brandt discover cobalt?

He didn't really discover it, he only isolated it. He was the one that found that Cobalt is the reason of the blue tint found in glass. Cobalt had been used for thousands of years before that point. The Egyptians, Persians and even the Greeks used it. Brandt is quoted to have said that there were 6 metals he was interested in in his experiments, namely Cobalt. Other than that no one knows how he isolated it or why...

  Reply

Taylor - 2/21/2008 4:04:02 AM

  E-mail address j - 9/28/2007 3:55:10 AM
  27

number of electrons=27
number of neutrons=32
number of protons=27

  Reply

E-mail address Alex - 2/8/2008 5:40:19 AM

how many valence electrons does cobalt have? how many bonds can it form?

  Reply

sammy - 1/25/2008 3:02:10 AM

does anyone know the group/family for colbalt my project is due tommorow and i need help! A.S.A.P!

  Reply

sammy - 1/25/2008 2:58:59 AM

  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.)

silver

  Reply

sammy - 1/25/2008 2:58:00 AM

  E-mail address j - 9/28/2007 3:55:10 AM
  27

there are 27 electrons

  Reply

E-mail address ??? - 12/10/2007 11:39:33 PM

cobalt has 27 electrons 27 protons and 32 neutrons!

  Reply

E-mail address ??? - 12/10/2007 11:37:16 PM

if anyone knows anything about the person who discovered cobalt, George Brant, please let me know! :-)

  Reply

 
 
   
Copyright © 1998-2020 Jan Straka
All rights reserved. Czech version Czech version