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Vanadium - Wikipedia Indonesia, ensiklopedia bebas berbahasa Indonesia

Vanadium

Dari Wikipedia Indonesia, ensiklopedia bebas berbahasa Indonesia.

Artikel ini belum atau baru diterjemahkan sebagian dari bahasa Inggris.
Bantulah Wikipedia untuk melanjutkannya. Lihat panduan penerjemahan Wikipedia.
23 titaniumvanadiumkromium
-

V

Nb
Keterangan Umum Unsur
Nama, Lambang, Nomor atom vanadium, V, 23
Seri kimia transition metals
Golongan, Periode, Blok 5, 4, d
Penampilan gray-white metal
Massa atom 50.9415(1) g/mol
Konfigurasi elektron [Ar] 3d3 4s2
Jumlah elektron tiap kulit 2, 8, 11, 2
Ciri-ciri fisik
Fase solid
Densitas (sekitar suhu kamar) 6.0 g/cm³
Densitas cair pada titik lebur 5.5 g/cm³
Titik lebur 2183 K
(1910 °C, 3470 °F)
Titik didih 3680 K
(3407 °C, 6165 °F)
Kalor peleburan 21.5 kJ/mol
Kalor penguapan 459 kJ/mol
Kapasitas kalor (25 °C) 24.89 J/(mol·K)
Tekanan uap
P/Pa 1 10 100 1 k 10 k 100 k
pada T/K 2101 2289 2523 2814 3187 3679
Ciri-ciri atom
Struktur kristal cubic body centered
Bilangan oksidasi 2, 3, 4, 5
(amphoteric oxide)
Elektronegativitas 1.63 (skala Pauling)
Ionization energies
(more)
1st: 650.9 kJ/mol
2nd: 1414 kJ/mol
3rd: 2830 kJ/mol
Jari-jari atom 135 pm
Jari-jari atom (terhitung) 171 pm
Jari-jari kovalen 125 pm
Lain-lain
Sifat magnetik  ???
Resistivitas listrik (20 °C) 197 nΩ·m
Konduktivitas termal (300 K) 30.7 W/(m·K)
Ekspansi termal (25 °C) 8.4 µm/(m·K)
Kecepatan suara (pada wujud kawat) (20 °C) 4560 m/s
Modulus Young 128 GPa
Modulus rigiditas 47 GPa
Modulus ruah 160 GPa
Nisbah Poisson 0.37
Skala kekerasan Mohs 7.0
Kekerasan Vickers 628 MPa
Kekerasan Brinell 628 MPa
Nomor CAS 7440-62-2
Isotop
iso NA waktu paruh DM DE (MeV) DP
48V syn 15.9735 d ε+β+ 4.0123 48Ti
49V syn 330 d ε 0.6019 49Ti
50V 0.25% 1.5×1017y ε 2.2083 50Ti
β- 1.0369 50Cr
51V 99.75% V stabil dengan 28 neutron
Referensi

Vanadium adalah salah satu unsur kimia dalam tabel periodik yang memiliki lambang V dan nomor atom 23.


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