https://padlet.com/cardenas_h/no8fl0djg0l7 - Hedy Cardenas en-us 2018-02-09 18:58:48 UTC 2025-11-24 16:28:33 UTC hello@padlet.com cardenas_h https://padlet.com/cardenas_h/no8fl0djg0l7/wish/230163862 https://www.google.com/search?]]> 2018-02-09 18:59:47 UTC https://padlet.com/cardenas_h/no8fl0djg0l7/wish/230163862 cardenas_h https://padlet.com/cardenas_h/no8fl0djg0l7/wish/230164852 -Identified until 1923, by Coster and Hevesy
-Named after Hafnia where it was discovered
- Nuclear reactor control
-Is a bright, silvery-gray metal that is very ductile.
-Melting point is about 2,150°C
 - Boiling pointabout 5,400°C
 -Its density is 13.1 grams per cubic centimeter.
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]]> 2018-02-09 19:01:50 UTC https://padlet.com/cardenas_h/no8fl0djg0l7/wish/230164852 cardenas_h https://padlet.com/cardenas_h/no8fl0djg0l7/wish/230168986 1.Good absorber of neutrons and is used in the control rods of nuclear reactors.
2.Used in vacuum tubes as a getter.
3.alloying agent
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