Molibden

42
Mo
Golongan
6
Periode
5
Blok
d
Proton
Elektron
Neutron
42
42
54
Sifat Umum
Nomor atom
42
Massa atom
95,96
Nomor massa
96
Kategori
Logam transisi
Warna
Abu-abu
Radioaktif
Tidak
From the Greek word molybdo, lead
Struktur kristal
Kubik Berpusat-badan
Sejarah
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.
Elektron per kulit
2, 8, 18, 13, 1
Konfigurasi elektron
[Kr] 4d5 5s1
Mo
Molybdenum is essential for plant foliage health
Sifat Fisika
Fase
Solid
Kepadatan
10,22 g/cm3
Titik lebur
2896,15 K | 2623 °C | 4753,4 °F
Titik didih
4912,15 K | 4639 °C | 8382,2 °F
Kalor peleburan
36 kJ/mol
Kalor penguapan
600 kJ/mol
Kapasitas kalor molar
0,251 J/g·K
Kelimpahan di kerak bumi
0,00011%
Kelimpahan di alam semesta
5×10-7%
Molybdenum
Kredit Gambar: Images-of-elements
Molybdenum with rough, oxidized surface
Nomor CAS
7439-98-7
PubChem CID Number
23932
Sifat Atom
Jari-jari atom
139 pm
Jari-jari kovalen
154 pm
Elektronegativitas
2,16 (Skala Pauling)
Potensi Ionisasi
7,0924 eV
Volume atom
9,4 cm3/mol
Kondusivitas termal
1,38 W/cm·K
Bilangan oksidasi
-2, -1, 1, 2, 3, 4, 5, 6
Aplikasi
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
Isotop
Isotop stabil
92Mo, 94Mo, 95Mo, 96Mo, 97Mo, 98Mo
Isotop tidak stabil
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