Molibden

42
Mo
Skupina
6
Perioda
5
Blok
d
Protons
Electrons
Neutrons
42
42
54
General Properties
Vrstno število
42
Atomska teža
95,96
Mass Number
96
Kategorija
Prehodne kovine
Barva
Gray
Radioactive
Ne
From the Greek word molybdo, lead
Kristalna struktura
Telesno centrirana kubična
Zgodovina
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.
Electrons per shell
2, 8, 18, 13, 1
Razporeditev elektronov
[Kr] 4d5 5s1
Mo
Molybdenum is essential for plant foliage health
Physical Properties
Faza snovi
Trdnina
Gostota
10,22 g/cm3
Tališče
2896,15 K | 2623 °C | 4753,4 °F
Vrelišče
4912,15 K | 4639 °C | 8382,2 °F
Talilna toplota
36 kJ/mol
Izparilna toplota
600 kJ/mol
Toplotna kapaciteta
0,251 J/g·K
Abundance in Earth's crust
0,00011%
Abundance in Universe
5×10-7%
Molybdenum
Zasluge za slike: Images-of-elements
Molybdenum with rough, oxidized surface
CAS Number
7439-98-7
PubChem CID Number
23932
Atomic Properties
Atomski polmer
139 pm
Kovalentni polmer
154 pm
Elektronegativnost
2,16 (Paulingova lestvica)
Ionization Potential
7,0924 eV
Atomic Volume
9,4 cm3/mol
Toplotna prevodnost
1,38 W/cm·K
Oksidacijska stanja
-2, -1, 1, 2, 3, 4, 5, 6
Applications
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.
Molybdenum is toxic in all but small quantities
Isotopes
Stable Isotopes
92Mo, 94Mo, 95Mo, 96Mo, 97Mo, 98Mo
Unstable Isotopes
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