Physical Properties of Potassium and Indium
Physical Properties
Melting Point
63.65 °C
99+
156.61 °C
99+
Boiling Point
774.00 °C
99+
2,000.00 °C
99+
Appearance
Physical State
Solid
Solid
Color
Silvery Gray
Silvery Gray
Luster
NA
Lustrous
Hardness
Mohs Hardness
0.40
23
1.20
20
Brinell Hardness
0.36 MPa
99+
8.80 MPa
99+
Speed of Sound
2,000.00 m/s
99+
1,215.00 m/s
99+
Optical Properties
Allotropes
No
No
α Allotropes
Not Available
Not Available
β Allotropes
Not Available
Not Available
γ Allotropes
Not Available
Not Available
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