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Home Q & A Board Science-Related Homework Help Geography and Earth Sciences
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lovingrace lovingrace
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6 years ago
The rare earth elements that are considered extremely important for widely used modern technologies include
 
  a. scandium and yttrium
  b. scandium, yttrium and the 15 lanthanides
  c. yttrium, cobalt and the 15 lanthanides
  d. scandium, nobelium and the 15 lanthanides
  e. the 17 lanthanides alone
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Tanzious02Tanzious02
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6 years ago
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lovingrace Author
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6 years ago
this is exactly what I needed
shangshang
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Yesterday
Thanks
asd454512
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2 hours ago
Brilliant ツ
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