Lots of interesting information -green twin - new twin. Gadolinium is named after a guy who is mined in a quarry apparently http://lessonpeer.com/drhillteach/Theordore%20Grays%20Element%20Lanthanides.mp4
Lots of interesting information -green twin - new twin. Gadolinium is named after a guy who is mined in a quarry apparently http://lessonpeer.com/drhillteach/Theordore%20Grays%20Element%20Lanthanides.mp4