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Radium

FranciumRadiumActinium
Apparentia
argentee blanc metallic
Proprietates atomic
Nomine, symbolo, numero Radium, Ra, 88
Serie chimic metallo alcalin terrose
Gruppo, periodo, bloco 2, 7, s
Configuration electronic [Ra] 7s2
Electronegativitate 0,9
Proprietates physic
Stato solido
Massa molar (226) g·mol-1
Densitate 5,5 g·cm-3
Puncto de fusion 973 K, 700 °C, 1292 °F
Puncto de ebullition 2010 K, 1737 °C, 3159 °F
Calor de fusion 8,5 kJ·mol−1
Calor de vaporisation 113 kJ·mol-1
Resistivitate electric (20 °C) 1000 nΩ·m
Conductivitate thermal 18,6 W·m-1·K-1
Isotopos
Iso. AN Semivita MD ED (MeV) PD
226Ra ~100% 1601 a α 4,871 222Rn
Valores in unitates SI e in le conditiones normal del material (25 °C, 100 kPa) si non indica al contrario.


Radium es un elemento chimic de symbolo Ra e numero atomic 88.

Nota
Nota

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Radium AF Radium ALS ራዲየም AM Radio (elemento) AN रेडियम ANP راديوم Arabic راديوم ARY راديوم ARZ Radiu (elementu) AST Radium AZ

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