Molybdeeni
42
Mo
Ryhmä
6
Jakso
5
Lohko
d
Protonia
Elektronit
Neutronia
42
42
54
Yleiset ominaisuudet
Järjestysluku
42
Atomipaino
95,96
Massaluku
96
Luokka
Siirtymäalkuaineet
Väri
Harmaa
Radioaktiivisuus
Ei
From the Greek word molybdo, lead
Kiderakenne
Tilakeskinen kuutiollinen
Historia
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.
Elektroneja elektronikuorilla
2, 8, 18, 13, 1
Orbitaalirakenne
[Kr] 4d5 5s1
Molybdenum is essential for plant foliage health
Fyysiset ominaisuudet
Olomuoto
Kiinteä
Tiheys
10,22 g/cm3
Sulamispiste
2896,15 K | 2623 °C | 4753,4 °F
Kiehumispiste
4912,15 K | 4639 °C | 8382,2 °F
Sulamislämpö
36 kJ/mol
Höyrystymislämpö
600 kJ/mol
Ominaislämpökapasiteetti
0,251 J/g·K
Esiintyvyys maankuoressa
0,00011%
Esiintyvyys maailmankaikkeudessa
5×10-7%
CAS-numero
7439-98-7
PubChem CID-numero
23932
Atomiominaisuudet
Atomisäde
139 pm
Kovalenttisäde
154 pm
Elektronegatiivisuus
2,16 (Paulingin asteikko)
Ionisoitumispotentiaali
7,0924 eV
Moolitilavuus
9,4 cm3/mol
Lämmönjohtavuus
1,38 W/cm·K
Hapetusluvut
-2, -1, 1, 2, 3, 4, 5, 6
Käyttö
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
Isotooppi
Vakaat isotoopit
92Mo, 94Mo, 95Mo, 96Mo, 97Mo, 98MoEpävakaat isotoopit
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