Page 117 - The Periodic Table Book

66
Dy Dysprosium

Discovery: 1886
66 66 97 State: Solid
Fergusonite Dysprosium reacts more easily with air and

This mineral
contains tiny water than most other lanthanide metals. Lanthanides
amounts of Although it was discovered in 1886, it took until
dysprosium. the 1950s to purify it. This metal is often used with
neodymium to produce magnets that are used in
This pure metal
remains shiny at car batteries, wind turbines, and generators.
room temperature.

Some hybrid car batteries
contain dysprosium.

Laboratory sample of pure dysprosium Hybrid car battery

67
Ho Holmium

State: Solid
The Swedish chemist Per Teodor Cleve named holmium 67 67 98 Discovery: 1878
after the Swedish city of Stockholm. Pure holmium can
This artificial
produce a strong magnetic field and is therefore used in magnets. gemstone is coloured
Its compounds are used to make lasers, and to colour glass and red by small amounts
artificial jewels, such as cubic zirconia. of holmium.

Bright,
silver
shine

Red zirconia
gemstone

Laboratory sample
of pure holmium

115

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