https://padlet.com/391086/k8x5gotvpd56 October 30, 2017 en-us 2017-10-30 01:01:08 UTC 2023-02-10 01:12:28 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Moderncam.png 391086 https://padlet.com/391086/k8x5gotvpd56/wish/201563336 2017-10-30 01:03:03 UTC https://padlet.com/391086/k8x5gotvpd56/wish/201563336 391086 https://padlet.com/391086/k8x5gotvpd56/wish/201565279 Some uses are carbon arc lights, studio lights, projector lights, camera lights, and other glass lenses.

]]> 2017-10-30 01:14:32 UTC https://padlet.com/391086/k8x5gotvpd56/wish/201565279 391086 https://padlet.com/391086/k8x5gotvpd56/wish/201565384 Melting point 920°C, 1688°F, 1193K

 Boiling point 3464°C, 6267°F, 3737K

Density (g cm−3) 6.15

Atomic number 57
 
Relative atomic mass 138.905

State at 20°C Solid
 
Key isotopes La, Period 6,  Block d

Electron configuration [Xe] 5d16s2 CAS number 7439-91-0

]]> 2017-10-30 01:15:25 UTC https://padlet.com/391086/k8x5gotvpd56/wish/201565384 391086 https://padlet.com/391086/k8x5gotvpd56/wish/201565963 The name lanthanum is derived from the Greek 'lanthanein', meaning to lie hidden.]]> 2017-10-30 01:19:14 UTC https://padlet.com/391086/k8x5gotvpd56/wish/201565963 391086 https://padlet.com/391086/k8x5gotvpd56/wish/201568701 2017-10-30 01:36:20 UTC https://padlet.com/391086/k8x5gotvpd56/wish/201568701 391086 https://padlet.com/391086/k8x5gotvpd56/wish/201569923 Lanthanum is a lanthanide which is found in, cerite, monazite, allanite, and bastinite.

]]> 2017-10-30 01:43:14 UTC https://padlet.com/391086/k8x5gotvpd56/wish/201569923 391086 https://padlet.com/391086/k8x5gotvpd56/wish/201570635 Lanthanum was discovered in January 1839 by Carl Gustav Mosander at the Karolinska Institute, Stockholm. He extracted it from cerium which had been discovered in 1803. Mosander noticed that while most of his sample of cerium oxide was insoluble, some was soluble and he deduced that this was the oxide of a new element.

]]> 2017-10-30 01:48:48 UTC https://padlet.com/391086/k8x5gotvpd56/wish/201570635 391086 https://padlet.com/391086/k8x5gotvpd56/wish/201978600 2017-10-31 01:17:38 UTC https://padlet.com/391086/k8x5gotvpd56/wish/201978600 391086 https://padlet.com/391086/k8x5gotvpd56/wish/201979194 Without lanthanum people that need glasses wouldn't have glasses because lanthanum is in the lenses, also pictures wouldn't zoom. Movies/plays would not have lights and you couldn't watch them in a theater because there would be no projectors.  ]]> 2017-10-31 01:20:48 UTC https://padlet.com/391086/k8x5gotvpd56/wish/201979194