Scandium – 21

Scandium is typically refined from thortveitite deposits or extracted from uranium mill tailings.

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Yttrium – 39

Yttrium us used in liquid crystal (LCD) screens and compact fluorescent lights (CFL) for its phosphorescent properties.

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Lanthanum – 57

Phosphor coating for compact fluorescent lamps (CFL). Nickel metal hydride (NiMH) batteries for electric / hybrid cars, laptop computers

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Cerium – 58

TV glass treated with cerium protects viewers from radiation.

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Praseodymium – 59

Fluid cracking catalysts (FCCs) used to refine heavy oils and tars.

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Neodymium – 60

Neodymium capacitor boosts power of cell phones.

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Promethium – 61

Nuclear-powered batteries that use photocells to convert light to electric current.

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Samarium – 62

Strong magnets that resist demagnetizing at high temperatures.

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Europium – 63

Europium can function as a superconductor under the right conditions

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Gadolinium – 64

Magneto-optic recording technology for storing computer data.

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Terbium – 65

Magneto-optic recording of data for computers. Green colour for LCD screens and fluorescent lighting.

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Dysprosium – 66

Dysprosium might be alloyed with steel for use in nuclear reactors.

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Holmium – 67

Holmium has unusual magnetic properties that could be exploited in the future.

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Erbium – 68

Erbium is added to fiber optic cables as a doping agent where it is used as a signal amplifier.

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Thulium – 69

Thulium is the least abundant of the naturally occurring rare earth elements

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Ytterbium – 70

Ytterbium can be alloyed with stainless steel to improve some of its mechanical properties.

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Lutetium – 71

Lutetium radioactive isotopes can be used as a catalyst in the cracking of petroleum products and a catalyst in some hydrogenation and polymerization processes.

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