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Potassium

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Gadolinium

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Potassium

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Gadolinium

Physical Properties of Potassium and Gadolinium

Potassium Metal

Potassium

Gadolinium Metal

Gadolinium

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1 Physical

1.1 Melting Point

63.65 °C1,311.00 °C

27 3410

1.2 Boiling Point

774.00 °C3,233.00 °C

147 5660

1.3 Appearance

1.3.1 Physical State

Solid

Solid

1.3.2 Color

Silvery Gray

Silvery White

1.3.3 Luster

NA

Metallic

1.4 Hardness

1.4.1 Mohs Hardness

0.40NA

0.2 8.5

1.4.2 Brinell Hardness

0.36 MPaNA

0.14 3490

1.4.3 Vickers Hardness

NA510.00 MPa

121 3430

1.5 Speed of Sound

2,000.00 m/s2,680.00 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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