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Potassium
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Cesium
Atomic Structure of Potassium and Cesium
Potassium
Cesium
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Summary
Periodic Table
Facts
Uses
Physical
Chemical
Atomic
Mechanical
Magnetic
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Atomic
Atomic Number
19
55
3
117
👆🏻
Electron Configuration
[Ar] 4s
1
[Xe] 6s
1
Crystal Structure
Body Centered Cubic (BCC)
Body Centered Cubic (BCC)
Crystal Lattice
Atom
Number of Protons
19
55
3
117
👆🏻
Number of Neutrons
20
78
4
285
👆🏻
Number of Electrons
19
55
3
117
👆🏻
Radius of an Atom
Atomic Radius
227.00 pm
265.00 pm
0
348
👆🏻
Covalent Radius
203.00 pm
244.00 pm
0
260
👆🏻
Van der Waals Radius
275.00 pm
343.00 pm
0
348
👆🏻
Atomic Weight
39.10 amu
132.91 amu
6.94
294
👆🏻
Atomic Volume
45.46 cm3/mol
71.07 cm3/mol
1.39
71.07
👆🏻
Adjacent Atomic Numbers
Previous Element
Next Element
Valence Electron Potential
10.40 (-eV)
8.62 (-eV)
0
392.42
👆🏻
Lattice Constant
532.80 pm
614.10 pm
0
891.25
👆🏻
Lattice Angles
π/2, π/2, π/2
π/2, π/2, π/2
Lattice C/A Ratio
1.69
1.87
0.423
1.9
👆🏻
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