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Rutenium - Wikipedia Indonesia, ensiklopedia bebas berbahasa Indonesia

Rutenium

Dari Wikipedia Indonesia, ensiklopedia bebas berbahasa Indonesia.

44 technetiumrutheniumrhodium
Fe

Ru

Os
Keterangan Umum Unsur
Nama, Lambang, Nomor atom ruthenium, Ru, 44
Seri kimia transition metals
Golongan, Periode, Blok 8, 5, d
Penampilan silvery white metallic
Massa atom 101.07(2) g/mol
Konfigurasi elektron [Kr] 4d7 5s1
Jumlah elektron tiap kulit 2, 8, 18, 15, 1
Ciri-ciri fisik
Densitas (sekitar suhu kamar) 12.45 g/cm³
Densitas cair pada titik lebur 10.65 g/cm³
Titik lebur 2607 K
(2334 °C, 4233 °F)
Titik didih 4423 K
(4150 °C, 7502 °F)
Kalor peleburan 38.59 kJ/mol
Kalor penguapan 591.6 kJ/mol
Kapasitas kalor (25 °C) 24.06 J/(mol·K)
Tekanan uap
P/Pa 1 10 100 1 k 10 k 100 k
pada T/K 2588 2811 3087 3424 3845 4388
Ciri-ciri atom
Struktur kristal hexagonal
Bilangan oksidasi 2, 3, 4, 6, 8
(mildly acidic oxide)
Elektronegativitas 2.2 (skala Pauling)
Energi ionisasi pertama: 710.2 kJ/mol
ke-2: 1620 kJ/mol
ke-3: 2747 kJ/mol
Jari-jari atom 130 pm
Jari-jari atom (terhitung) 178 pm
Jari-jari kovalen 126 pm
Lain-lain
Electrical resistivity (0 °C) 71 nΩ·m
Konduktivitas termal (300 K) 117 W/(m·K)
Ekspansi termal (25 °C) 6.4 µm/(m·K)
Kecepatan suara (pada wujud kawat) (20 °C) 5970 m/s
Modulus Young 447 GPa
Modulus rigiditas 173 GPa
Modulus ruah 220 GPa
Nisbah Poisson 0.30
Skala kekerasan Mohs 6.5
Kekerasan Brinell 2160 MPa
Nomor CAS 7440-18-8
Isotop
iso NA waktu paruh DM DE (MeV) DP
96Ru 5.52% Ru stabil dengan 52 neutron
97Ru syn 2.9 d d ε - 97Tc
γ 0.215, 0.324 -
98Ru 1.88% Ru stabil dengan 54 neutron
99Ru 12.7% Ru stabil dengan 55 neutron
100Ru 12.6% Ru stabil dengan 56 neutron
101Ru 17.0% Ru stabil dengan 57 neutron
102Ru 31.6% Ru stabil dengan 58 neutron
103Ru syn 39.26 d β- 0.226 103Rh
γ 0.497 -
104Ru 18.7% Ru stabil dengan 60 neutron
106Ru syn 373.59 d β- 0.039 106Rh
Referensi

Ruthenium adalah suatu unsur kimia dalam tabel periodik yang memiliki lambang Ru dan nomor atom 44.

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