Molybden
42
Mo
Gruppe
6
Periode
5
Blokk
d
Protoner
Elektroner
Nøytroner
42
42
54
Generelle egenskaper
Atomnummer
42
Atomvekt
95,96
Massetall
96
Kategori
Transisjonsmetaller
Farge
Grå
Radioaktiv
Nei
From the Greek word molybdo, lead
Krystallstruktur
Body Centered Cubic
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.
Elektroner per energinivå
2, 8, 18, 13, 1
Elektronkonfigurasjon
[Kr] 4d5 5s1
Molybdenum is essential for plant foliage health
Fysikalske egenskaper
Fase
Fast stoff
Tetthet
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
Fordampningsvarme
600 kJ/mol
Spesifikk varmekapasitet
0,251 J/g·K
Forekomst i jordskorpa
0,00011%
Forekomst i universet
5×10-7%
CAS Number
7439-98-7
PubChem CID Number
23932
Atomegenskaper
Atomradius
139 pm
Kovalent radius
154 pm
Elektronegativitet
2,16 (Pauling-skalaen)
Ioniseringsenergi
7,0924 eV
Molart volum
9,4 cm3/mol
Termisk ledningsevne
1,38 W/cm·K
Oksidasjonstilstander
-2, -1, 1, 2, 3, 4, 5, 6
Bruksområder
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
Isotoper
Stabile isotoper
92Mo, 94Mo, 95Mo, 96Mo, 97Mo, 98MoUstabile isotoper
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