Predefinição:Elemento/Tório

Tório
ActínioTórioProtactínio
Ce
 
 
90
Th
 
               
               
                                   
                                   
                                                               
                                                               
Th
Tabela completaTabela estendida
Aparência
branco prateado


Amostra de tório, de pureza 99,9%, em uma ampola de vidro, ca. 0,1 g.
Informações gerais
Nome, símbolo, número Tório, Th, 90
Série química Actinídeo
Grupo, período, bloco n/a, 7, f
Densidade, dureza 11724 kg/m3, 3,0
Número CAS 7440-29-1
Número EINECS
Propriedade atómicas
Massa atómica 232,0381 u
Raio atómico (calculado) 179 pm
Raio covalente 206±6 pm
Raio de Van der Waals pm
Configuração electrónica [Rn] 6d2 7s2
Elétrons (por nível de energia) 2, 8, 18, 32, 18, 10, 2 (ver imagem)
Estado(s) de oxidação 4, 3, 2
Óxido fracamente básico
Estrutura cristalina cúbica de faces centradas
Propriedades físicas
Estado da matéria sólido
Ponto de fusão 2115 K
Ponto de ebulição 5061 K
Entalpia de fusão 13,81 kJ/mol
Entalpia de vaporização 514 kJ/mol
Temperatura crítica  K
Pressão crítica  Pa
Volume molar m3/mol
Pressão de vapor 1 Pa a 2633 K
Velocidade do som 2490 m/s a 20 °C
Classe magnética
Susceptibilidade magnética
Permeabilidade magnética
Temperatura de Curie  K
Diversos
Eletronegatividade (Pauling) 1,3
Calor específico 120 J/(kg·K)
Condutividade elétrica 6,53·106 S/m
Condutividade térmica 54 W/(m·K)
1.º Potencial de ionização 587 kJ/mol
2.º Potencial de ionização 1110 kJ/mol
3.º Potencial de ionização 1930 kJ/mol
4.º Potencial de ionização 2780 kJ/mol
5.º Potencial de ionização kJ/mol
6.º Potencial de ionização kJ/mol
7.º Potencial de ionização kJ/mol
8.º Potencial de ionização kJ/mol
9.º Potencial de ionização kJ/mol
10.º Potencial de ionização kJ/mol
Isótopos mais estáveis
iso AN Meia-vida MD Ed PD
MeV
227Thtraços18,72 dα6,146223Ra
228Thtraços1,9131 aα5,520224Ra
229Thsintético7880 aα5,168225Ra
230Thtraços75,380 aα4,770226Ra
231Thtraços25,52 hβ
α
0,389
4,213
231Pa
227Ra
232Th100%1,405·1010 aα4,083228Ra
233Thsintético22,3 minβ1,245233Pa
234Thtraços24,10 dβ0,273234Pa
Unidades do SI & CNTP, salvo indicação contrária.

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