Molibdè
42
Mo
Grup
6
Període
5
Bloc
d
Protons
Electrons
Neutrons
42
42
54
Propietats Generals
Nombre atòmic
42
Massa atòmica
95,96
Nombre de massa
96
Categoria
Metalls de transició
Color
Gris
Radioactiu
No
From the Greek word molybdo, lead
Estructura cristal·lina
Cos cúbic centrat
Història
Molybdenite was often confused for graphite and it was thought to contain lead.
In 1778 Swedish scientist Carl Wilhelm Scheele proved that molybdenite was not graphite nor did it contain lead.
In 1781, Scheele's friend and countryman, Peter J. Hjelm isolated the metal by using carbon and linseed oil.
In 1778 Swedish scientist Carl Wilhelm Scheele proved that molybdenite was not graphite nor did it contain lead.
In 1781, Scheele's friend and countryman, Peter J. Hjelm isolated the metal by using carbon and linseed oil.
Electrons per capa
2, 8, 18, 13, 1
Configuració electrònica
[Kr] 4d5 5s1
Molybdenum is essential for plant foliage health
Propietats Físiques
Fase
Sòlid
Densitat
10,22 g/cm3
Punt de fusió
2896,15 K | 2623 °C | 4753,4 °F
Punt d'ebullició
4912,15 K | 4639 °C | 8382,2 °F
Entalpia de fusió
36 kJ/mol
Entalpia de vaporització
600 kJ/mol
Capacitat tèrmica específica
0,251 J/g·K
Abundància a l'escorça terrestre
0,00011%
Abundància a l'univers
5×10-7%
Número CAS
7439-98-7
Número CID de PubChem
23932
Propietats Atòmiques
Radi atòmic
139 pm
Radi covalent
154 pm
Electronegativitat
2,16 (Escala de Pauling)
Potencial d'ionització
7,0924 eV
Volum atòmic
9,4 cm3/mol
Conductivitat tèrmica
1,38 W/cm·K
Estats d'oxidació
-2, -1, 1, 2, 3, 4, 5, 6
Aplicacions
Molybdenum is used as glass furnace electrodes due to its high melting point.
The metal is also used in nuclear energy applications and for missile and aircraft parts.
Molybdenum is valuable as a catalyst in the refining of petroleum.
Molybdenum is used in small quantities to harden steel and is used in many alloys.
The metal is also used in nuclear energy applications and for missile and aircraft parts.
Molybdenum is valuable as a catalyst in the refining of petroleum.
Molybdenum is used in small quantities to harden steel and is used in many alloys.
Molybdenum is toxic in all but small quantities
Isòtops
Isòtops estables
92Mo, 94Mo, 95Mo, 96Mo, 97Mo, 98MoIsòtops inestables
83Mo, 84Mo, 85Mo, 86Mo, 87Mo, 88Mo, 89Mo, 90Mo, 91Mo, 93Mo, 99Mo, 100Mo, 101Mo, 102Mo, 103Mo, 104Mo, 105Mo, 106Mo, 107Mo, 108Mo, 109Mo, 110Mo, 111Mo, 112Mo, 113Mo, 114Mo, 115Mo