Potassium

Thulium

Atomic Structure of Potassium and Thulium

Potassium

Thulium

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Atomic

Atomic Number

1969

3 117

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Electron Configuration

[Ar] 4s¹

[Xe] 4f¹³ 6s²

Crystal Structure

Body Centered Cubic (BCC)

Hexagonal Close Packed (HCP)

Crystal Lattice

Atom

Number of Protons

1969

3 117

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Number of Neutrons

20100

4 285

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Number of Electrons

1969

3 117

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Radius of an Atom

Atomic Radius

227.00 pm176.00 pm

0 348

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Covalent Radius

203.00 pm160.00 pm

0 260

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Van der Waals Radius

275.00 pm227.00 pm

0 348

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Atomic Weight

39.10 amu168.93 amu

6.94 294

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Atomic Volume

45.46 cm3/mol18.10 cm3/mol

1.39 71.07

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Adjacent Atomic Numbers

Previous Element

Next Element

Valence Electron Potential

10.40 (-eV)49.70 (-eV)

0 392.42

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Lattice Constant

532.80 pm353.75 pm

0 891.25

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Lattice Angles

π/2, π/2, π/2

π/2, π/2, 2 π/3

Lattice C/A Ratio

1.691.57

0.423 1.9

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