Niobyum
41
Nb
Grup
5
Periyot
5
Blok
d
Protonlar
Elektronlar
Nötronlar
41
41
52
Temel Özellikleri
Atom numarası
41
Atom ağırlığı
92,90638
Kütle Numarası
93
Kategori
Geçiş metalleri
Renk
Gri
Radyoaktif
Hayir
Named after Niobe, the daughter of Tantalu
Kristal yapısı
Hacim merkezli kübik
Tarihi
Niobium was discovered by the English chemist Charles Hatchett in 1801 and named the new element columbium.
In 1846, German chemist Henrich Rose independently discovered the element and named it niobium.
The metal was first isolated by Swedish scientist Christian Wilhelm Blomstrand in 1864 who reduced the chloride by heating it in a hydrogen atmosphere.
In 1846, German chemist Henrich Rose independently discovered the element and named it niobium.
The metal was first isolated by Swedish scientist Christian Wilhelm Blomstrand in 1864 who reduced the chloride by heating it in a hydrogen atmosphere.
Enerji seviyesi başına Elektronlar
2, 8, 18, 12, 1
Elektron dizilimi
[Kr] 4d4 5s1
Brazil is the leading producer of niobium
Fiziksel Özellikleri
Faz
Katı
Yoğunluk
8,57 g/cm3
Ergime noktası
2750,15 K | 2477 °C | 4490,6 °F
Kaynama noktası
5017,15 K | 4744 °C | 8571,2 °F
Ergime ısısı
26,8 kJ/mol
Buharlaşma ısısı
690 kJ/mol
Isı kapasitesi
0,265 J/g·K
Dünya kabuğundaki bulunulabilirliği
0,0017%
Evrendeki bulunulabilirliği
2×10-7%
CAS Numarası
7440-03-1
PubChem CID Numarası
23936
Atom Özellikleri
Atom yarıçapı
146 pm
Kovalent yarıçapı
164 pm
Elektronegatifliği
1,6 (Pauling ölçeği)
İyonlaşma enerjisi
6,7589 eV
Atomik Hacim
10,87 cm3/mol
Isıl iletkenlik
0,537 W/cm·K
Yükseltgenme seviyeleri
-1, 2, 3, 4, 5
Uygulamalar
Niobium is used in arc-welding rods for stabilized grades of stainless steel.
Niobium alloys are strong and are often used in pipeline construction.
The metal is used in superalloys for jet engines and heat resistant equipment.
Niobium is found in many medical devices such as pacemakers.
Niobium alloys are strong and are often used in pipeline construction.
The metal is used in superalloys for jet engines and heat resistant equipment.
Niobium is found in many medical devices such as pacemakers.
Some niobium compounds are highly toxic
İzotoplar
Kararlı izotoplar
93NbKararsız izotoplar
81Nb, 82Nb, 83Nb, 84Nb, 85Nb, 86Nb, 87Nb, 88Nb, 89Nb, 90Nb, 91Nb, 92Nb, 94Nb, 95Nb, 96Nb, 97Nb, 98Nb, 99Nb, 100Nb, 101Nb, 102Nb, 103Nb, 104Nb, 105Nb, 106Nb, 107Nb, 108Nb, 109Nb, 110Nb, 111Nb, 112Nb, 113Nb