There are 17 Rare Earth Elements. Pick any 5 ofthem, and for EACH of the 5, explain in detail why they are so critical to us.Include in your answer:a. what it used for and why are those elements are so criticalb. Where in the world are the resource is located and approximately how much is left?c.For EACH of the 5, please explain 3 things we need to start doing today to avoid running out of that resource. It is very important that you provide thorough and complete explanations here.

Question
Asked Sep 28, 2019
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  1. There are 17 Rare Earth Elements. Pick any 5 of

them, and for EACH of the 5, explain in detail why they are so critical to us.

Include in your answer:

a. what it used for and why are those elements are so critical

b. Where in the world are the resource is located and approximately how much is left?

c.For EACH of the 5, please explain 3 things we need to start doing today to avoid running out of that resource. It is very important that you provide thorough and complete explanations here.

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Expert Answer

Step 1

Rare earth elements are a group of seventeen chemical elements that occur together in the periodic table. The group consists of yttrium and the 15 lanthanide elements (lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, and lutetium). Scandium is found in most rare earth element deposits and is sometimes classified as a rare earth element.

Although they are called rare, rare earth elements are not extremely rare on Earth. They were called this because they are spread very evenly over the Earth, so it is hard to find a lot in one place.

Step 2

Uses of rare earth elements:

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Scandium Aerospace components, aluminum alloys Yttrium Lasers, TV and computer displays, microwave filters Lanthanum Oil refining, hybrid-car batteries, camera lenses Catalytic converters, oil refining, glass-lens production Praseodymium Aircraft engines, carbon arc lights Neodymium Computer hard drives, cell phones, high-power magnets Promethium Portable x-ray machines, nuclear batteries Samarium High-power magnets, ethanol, PCB cleansers TV and computer displays, lasers, optical electronics Europium Gadolinium Cancer therapy, MRI contrast agent Terbium Solid-state electronics, sonar systems Dysprosium Lasers, nuclear-reactor control rods, high-power magnets Holmium High-power magnets, lasers Erbium Fiber optics, nuclear-reactor control rods Thulium X-ray machines, superconductors Ytterbium Portable x-ray machines, lasers Lutetium Chemical processing, LED lightbulbs

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Step 3

Rare-earth so critical:

Rare-earth elements (REE) are necessary components of more than 200 products across a wide range of applications, especially high-tech consumer products, such as cellular telephones, computer hard drives, electric and hybrid vehicles, and flat-screen monitors and televisions. Significant defense applications include electronic displays, guidance systems, lasers, and radar and sonar systems. Although the amount of REE used in a product may not be a significant part of that pr...

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