Молибден

42
Mo
Група
6
Периода
5
блок
d
Protons
Electrons
Neutrons
42
42
54
Општи Својства
Атомски број
42
Атомска тежина
95,96
Mass Number
96
Category
Преоден метал
Color
Gray
Radioactive
Не
From the Greek word molybdo, lead
Кристална структура
Body Centered Cubic
History
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
Електронска конфигурација
[Kr] 4d5 5s1
Mo
Molybdenum is essential for plant foliage health
Физички Својства
Фаза
Solid
Густина
10,22 g/cm3
Точка на топење
2896,15 K | 2623 °C | 4753,4 °F
Точка на вриење
4912,15 K | 4639 °C | 8382,2 °F
Топлина на топење
36 kJ/mol
Топлина на испарување
600 kJ/mol
Specific Heat Capacity
0,251 J/g·K
Abundance in Earth's crust
0,00011%
Abundance in Universe
5×10-7%
Molybdenum
Кредити на слика: Images-of-elements
Molybdenum with rough, oxidized surface
CAS Number
7439-98-7
PubChem CID Number
23932
Атомски Својства
Атомски полупречник
139 pm
Ковалентен полупречник
154 pm
Електронегативност
2,16 (Полингова скала)
Ionization Potential
7,0924 eV
Atomic Volume
9,4 cm3/mol
Thermal Conductivity
1,38 W/cm·K
Oxidation States
-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