Difference between revisions of "Cesium"
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{{Element | | {{Element | | ||
| − | name= | + | name=Cesium | |
| − | symbol= | + | symbol=Cs | |
| − | + | available= | | |
need= | | need= | | ||
number=55 | | number=55 | | ||
| − | mass=132.90545 | + | mass=132.90545 | |
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group=1 | | group=1 | | ||
period=6 | | period=6 | | ||
| − | phase= | + | phase=Solid | |
series=Alkali metals | | series=Alkali metals | | ||
density=1.93 g/cm3 | | density=1.93 g/cm3 | | ||
Revision as of 06:03, 27 March 2008
| 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/A ← Rb → Sr | |
| Xe ← Cs → Ba | |
| N/A ← Fr → Ra | |
| 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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