42
Mo
6
週期
5
d
個質子
電子
個中子
42
42
54
一般屬性
原子序數
42
標準原子質量
95.96
品質編號
96
類別
過渡金屬
顏色
灰色
放射性
From the Greek word molybdo, lead
晶體結構
Body Centered Cubic
歷史
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.
每個外殼的電子
2, 8, 18, 13, 1
電子排布
[Kr] 4d5 5s1
Mo
Molybdenum is essential for plant foliage health
物理性質
物態
固體
密度
10.22 g/cm3
熔點
2896.15 K | 2623 °C | 4753.4 °F
沸點
4912.15 K | 4639 °C | 8382.2 °F
熔化熱
36 kJ/mol
汽化熱
600 kJ/mol
比熱容
0.251 J/g·K
地殼豐度
0.00011%
宇宙豐度
5×10-7%
Molybdenum
圖片來源: Images-of-elements
Molybdenum with rough, oxidized surface
CAS 編號
7439-98-7
Pubchem CID 編號
23932
原子性質
原子半徑
139 pm
共價半徑
154 pm
電負性
2.16 (鲍林标度)
電離電位
7.0924 eV
原子體積
9.4 cm3/mol
熱導率
1.38 W/cm·K
氧化態
-2, -1, 1, 2, 3, 4, 5, 6
應用
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
同位素
穩定同位素
92Mo, 94Mo, 95Mo, 96Mo, 97Mo, 98Mo
不穩定同位素
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