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Polonium

BismuthPoloniumAstato
Apparentia
argentee
Proprietates atomic
Nomine, symbolo, numero Polonium, Po, 84
Serie chimic metalloide
Gruppo, periodo, bloco 16, 6, p
Configuration electronic [Xe] 6s2 4f14 5d10 6p4
Electronegativitate 2,0
Proprietates physic
Stato solido
Massa molar (209) g·mol-1
Densitate (alpha) 9,196, (beta) 9,398 g·cm-3
Puncto de fusion 527 K, 254 °C, 489 °F
Puncto de ebullition 1235 K, 962 °C, 1764 °F
Calor de fusion ca. 13 kJ·mol-1
Calor de vaporisation 102,91 kJ·mol-1
Calor specific 26,4 J·mol-1·K-1
Resistivitate electric (0 °C) (α) 400 nΩ·m
Conductivitate thermal 20? W·m-1·K-1
Expansion thermal (25 °C) 23,5 µm·m-1·K-1
Isotopos
Iso. AN Semivita MD ED (MeV) PD
208Po syn. 2,898 a α 5,215 204Pb
εβ+ 1,401 208Bi
209Po syn. 103 a α 4,979 205Pb
εβ+ 1,893 209Bi
210Po tracia 138,376 d α 5,307 206Pb
Valores in unitates SI e in le conditiones normal del material (25 °C, 100 kPa) si non indica al contrario.


Polonium es un elemento chimic de symbolo Po e numero atomic 84.

Nota
Nota

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Polonium AF ፖሎኒየም AM Polonio AN पोलोनियम ANP بولونيوم Arabic پولونيوم ARY بولونيوم ARZ Poloniu AST Polonium AZ Полоний BA

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