Topical Questions
These questions are keyed to the major topics in the chapter. Usually a question that is answered at the back of this book is paired with a similar one that is not.
The lanthanides, or rare earths, are only “medium rare.” All can be purchased for a reasonable price. Give electron configurations for atoms of these lanthanides.
(a) Europium (Eu), the most expensive of the rare earth elements; 1 g can be purchased for about $90.
(b) Ytterbium (Yb). Less expensive than Eu, Yb costs only about $12 per gram. It was named for the village of Ytterby in Sweden, where a mineral source of the element was found.
We need at least 10 more requests to produce the solution.
0 / 10 have requested this problem solution
The more requests, the faster the answer.