Potassium

Yttrium

Atomic Structure of Potassium and Yttrium

Potassium

Yttrium

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Atomic

Atomic Number

1939

3 117

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Electron Configuration

[Ar] 4s¹

[Kr] 4d¹ 5s²

Crystal Structure

Body Centered Cubic (BCC)

Hexagonal Close Packed (HCP)

Crystal Lattice

Atom

Number of Protons

1939

3 117

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Number of Neutrons

2050

4 285

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Number of Electrons

1939

3 117

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Radius of an Atom

Atomic Radius

227.00 pm180.00 pm

0 348

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Covalent Radius

203.00 pm190.00 pm

0 260

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Van der Waals Radius

275.00 pm200.00 pm

0 348

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Atomic Weight

39.10 amu88.91 amu

6.94 294

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Atomic Volume

45.46 cm3/mol19.80 cm3/mol

1.39 71.07

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Adjacent Atomic Numbers

Previous Element

Next Element

Valence Electron Potential

10.40 (-eV)48.00 (-eV)

0 392.42

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Lattice Constant

532.80 pm364.74 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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