1.
Rare earth used in magnets
2.
Fluorescent material in screens
3.
Rare earth used in MRI contrast
4.
Green phosphor in displays
5.
Rare earth in magnets and lasers
6.
Rare earth used in lasers
7.
Pinkish rare earth in fiber optics
8.
Least abundant lanthanide
9.
Rare earth used in lasers and alloys
10.
Heaviest lanthanide element
11.
Metal in nuclear reactor control rods
12.
Corrosion-resistant metal in electronics
13.
High melting point metal in filaments
14.
Rare metal in superalloys
15.
Densest naturally occurring element
16.
Very hard, corrosion-resistant metal
17.
Precious metal used in jewelry and catalysts
18.
Shiny yellow metal, symbol Au
19.
Only metal liquid at room temperature
20.
Toxic metal formerly used in electronics
