Rubidium

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Rubidium
Rb
In situ availability:
Necessity:
Atomic number: 37
Atomic mass: 85.4678
group: 1
period: 5
normal phase: Solid
series: Alkali metals
density: 1.532 g/cm3
melting point: 312.46K,
39.31°C,
102.76°F
boiling point: 961K,
688°C,
1270°F
N/A ← K → Ca
Kr ← Rb → Sr
N/A ← Cs → Ba
Atomic radius (pm): 235
Bohr radius (pm): 265
Covalent radius (pm): 211
Van der Waals radius (pm): 244
ionic radius (pm): (+1) 161
1st ion potential (eV): 4.18
Electron Configuration
1s2
2s2 2p6
3s2 3p6 3d10
4s2 4p6
5s1
Electrons Per Shell
2, 8, 18, 8, 1
Electronegativity: 0.82
Electron Affinity: 0.49
Oxidation states: 1
Magnetism: ?
Crystal structure: Body centered cubic

Rubidium is a Alkali metal in group 1. It has a Body centered cubic crystalline structure. This element has a stable isotope of 85




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