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Lithium
Lithium
☒

Protactinium
Protactinium
☒



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Lithium
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Protactinium

Physical Properties of Lithium and Protactinium

Physical

Melting Point

Boiling Point

Physical State

Color

Luster

Mohs Hardness

Brinell Hardness

Vickers Hardness

Speed of Sound

Refractive Index

Reflectivity

Allotropes

α Allotropes

β Allotropes

γ Allotropes

 
180.54 °C
1,347.00 °C
Solid
Silvery White
-
0.60
5.00 MPa
5.30 MPa
6,000.00 m/s
1.35
95.00 %
✔✘
-
-
-
 
1,568.00 °C
4,027.00 °C
Solid
Silver
Metallic
5.00
125.00 MPa
220.00 MPa
12,400.00 m/s
1.60
60.00 %
✔✘
-
-
-