Molybdeeni

Kemiallinen merkki: Mo
Järjestysluku: 42
Kategoria: siirtymämetallit
Ryhmä: 6
Jakso: 5
Lohko: d
Moolimassa: 95,94 g/mol
Elektronia kuorilla: 2, 8, 18, 13, 1
CAS-numero: 7439-98-7
Olomuoto: kiinteä
Tiheys: 10,28 kg/l (lähellä huoneenlämpöä)
Sulamispiste: 2896 K (2623 °C, 4753 °F)
Kiehumispiste: 4912 K (4639 °C, 8382 °F)
Kiderakenne: cubic body centered
Hapetusluvut: 6, 5, 4, 3, 2, 1
Elektronegatiivisuus: 2,16 (Pauling-asteikko)
Nimen alkuperä: molybdos
Nimen tarkoitus: lead, as the ore molybdena (currently molydbenite) was thought to be a lead ore
Faktoja:
- has the sixth-highest melting point of any element, and for this reason it is often used in high-strength steel alloys
- is found in trace amounts in plants and animals, although excess molybdenum can be toxic in some animals
- in a 70 kg (150 lb) human body, there is approximately 9,3 mg molybdenum
- is used in the manufacture of aircraft parts, electrical contacts, industrial motors, and filaments