Molybden
42
Mo
Gruppe
6
Periode
5
Blokk
d
Proton
Elektron
Nøytron
42
42
54
Generelle eigenskapar
Atomnummer
42
Atommasse
95,96
Massetal
96
Kategori
Transisjonsmetall
Farge
Grå
Radioaktiv
Nei
From the Greek word molybdo, lead
Krystallstruktur
Romsentrert kubisk
Historie
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.
Elektron per energinivå
2, 8, 18, 13, 1
Elektronkonfigurasjon
[Kr] 4d5 5s1
Molybdenum is essential for plant foliage health
Fysiske eigenskapar
Tilstandsform
Fast stoff
Tettleik
10,22 g/cm3
Smeltepunkt
2896,15 K | 2623 °C | 4753,4 °F
Kokepunkt
4912,15 K | 4639 °C | 8382,2 °F
Smeltevarme
36 kJ/mol
Fordampingsvarme
600 kJ/mol
Spesifikk varmekapasitet
0,251 J/g·K
Førekomst i jordskorpa
0,00011%
Førekomst i universet
5×10-7%
CAS-nummer
7439-98-7
PubChem CID-nummer
23932
Atom eigenskapar
Atomradius
139 pm
Kovalent radius
154 pm
Elektronegativitet
2,16 (Paulings skala)
Ioniseringspotensial
7,0924 eV
Molart volum
9,4 cm3/mol
Termisk konduktivitet
1,38 W/cm·K
Oksidasjonstrinn
-2, -1, 1, 2, 3, 4, 5, 6
Bruksområde
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
Isotopar
Stabile isotopar
92Mo, 94Mo, 95Mo, 96Mo, 97Mo, 98MoUstabile isotopar
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