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Holmium

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Potassium

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Holmium

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Potassium

Physical Properties of Holmium and Potassium

Holmium Metal

Holmium

Potassium Metal

Potassium

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1 Physical

1.1 Melting Point

1,461.00 °C63.65 °C

27 3410

1.2 Boiling Point

2,600.00 °C774.00 °C

147 5660

1.3 Appearance

1.3.1 Physical State

Solid

Solid

1.3.2 Color

Silvery White

Silvery Gray

1.3.3 Luster

Metallic

NA

1.4 Hardness

1.4.1 Mohs Hardness

NA0.40

0.2 8.5

1.4.2 Brinell Hardness

746.00 MPa0.36 MPa

0.14 3490

1.4.3 Vickers Hardness

481.00 MPaNA

121 3430

1.5 Speed of Sound

2,760.00 m/s2,000.00 m/s

818 16200

1.6 Optical Properties

1.6.1 Refractive Index

NANA

1.000933 1.7229

1.6.2 Reflectivity

NANA

58 97

1.7 Allotropes

✔ ✘

✔ ✘

1.7.1 α Allotropes

Not Available

Not Available

1.7.2 β Allotropes

Not Available

Not Available

1.7.3 γ Allotropes

Not Available

Not Available

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