Cesium

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Cesium
Cs
In situ availability:
Necessity:
Atomic number: 55
Atomic mass: 132.90545
group: 1
period: 6
normal phase: Solid
series: Alkali metals
density: 1.93 g/cm3
melting point: 301.59K,
28.44°C,
83.19°F
boiling point: 944K,
671°C,
1240°F
N/ARbSr
Xe ← Cs → Ba
N/AFrRa
Atomic radius (pm): 260
Bohr radius (pm): 298
Covalent radius (pm): 225
Van der Waals radius (pm):
ionic radius (pm): (+1) 174
1st ion potential (eV): 3.89
Electron Configuration
1s2
2s2 2p6
3s2 3p6 3d10
4s2 4p6 4d10
5s2 5p6
6s1
Electrons Per Shell
2, 8, 18, 18, 8, 1
Electronegativity: 0.79
Electron Affinity: 0.47
Oxidation states: 1
Magnetism: ?
Crystal structure: Body centered cubic

Cesium is a Alkali metal in group 1. It has a Body centered cubic crystalline structure. This element has a stable isotope of 133




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