Cobalt he yit-tsúng Fa-ho̍k Ngièn-su, fa-ho̍k fù-ho vì Co, ngièn-tsṳ́ su-muk he 27, tshai Ngièn-su Tsû-khì péu chûng thi ngi-sṳ̍p-chhit vi.

  1. Standard Atomic Weights 2013. Commission on Isotopic Abundances and Atomic Weights
  2. 模板:Greenwood&Earnshaw2nd
Cobalt,  27Co
ngoi-kôn
hard lustrous gray metal

electrolytically refined cobalt chips
Kî-pún sin-sit
Miàng, fù-ho cobalt, Co
ngoi-hìn hard lustrous gray metal
Cobalt chhai chû-khì-péu ke vi-chi
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Americium (actinium-hi)
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Meitnerium (unknown chemical properties)
Darmstadtium (unknown chemical properties)
Roentgenium (unknown chemical properties)
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Nihonium (unknown chemical properties)
Flerovium (heu-ko-thu kîm-su̍k)
Moscovium (unknown chemical properties)
Livermorium (unknown chemical properties)
Tennessine (unknown chemical properties)
Oganesson (unknown chemical properties)


Co

Rh
thietcobaltnickel
ngièn-chṳ́ sì-sú 27
ngièn-chṳ́-liòng (±) 58.933194(4)[1]
ngièn-su lui-phe̍t   ko-thu kîm-su̍k
Chhu̍k, fûn-khî 9 chhu̍k, d-block
chû-khì period 4
thien-chṳ́ phài-lie̍t [Ar] 3d7 4s2
per shell 2, 8, 15, 2
vu̍t-lî sin-chṳt
ngân-set metallic gray
Siông ku-thí
yùng-tiám 1768 K ​(1495 °C, ​2723 °F)
pui-tiám 3200 K ​(2927 °C, ​5301 °F)
Me̍t-thu near Sit-vûn 8.90 g·cm−3
8.86 g·cm−3
Yùng-fa-ngie̍t 16.06 kJ·mol−1
Chîn-fat-ngie̍t 377 kJ·mol−1
Ngie̍t-yùng-liong 24.81 J·mol−1·K−1
chîn-hi-ap
P (Pa) 1 10 100 1 k 10 k 100 k
chhai T (K) 1790 1960 2165 2423 2755 3198
Ngièn-chṳ́ sin-chṳt
Yông-fa-su −3, −1, +1, +2, +3, +4, +5[2] ​(an amphoteric oxide)
Thien-fu-sin Pauling scale: 1.88
Thien-lì-nèn 1st: 760.4 kJ·mol−1
2nd: 1648 kJ·mol−1
3rd: 3232 kJ·mol−1
(more)
Ngièn-chṳ́ pan-kang empirical: 125 pm
Khiung-ka pan-kang Low spin: 126±3 pm
High spin: 150±7 pm
Miscellanea
Chîn-thí keu-chhohexagonal close-packed (hcp)
Hexagonal close packed crystal structure for cobalt
Sâng-suk thin rod 4720 m·s−1 (at 20 °C)
Ngie̍t-phàng-chong 13.0 µm·m−1·K−1 (at 25 °C)
Ngie̍t-chhòn-thô-li̍t 100 W·m−1·K−1
Thien-chú-li̍t 62.4 nΩ·m (at 20 °C)
Chhṳ̀-sin ferromagnetic
Young's modulus 209 GPa
Shear modulus 75 GPa
Bulk modulus 180 GPa
Poisson ratio 0.31
Mohs hardness 5.0
Vickers hardness 1043 MPa
Brinell hardness 470–3000 MPa
CAS Registry Number 7440-48-4
Le̍k-sú
Fat-hien Georg Brandt (1732)
Chui vún-thin ke thùng-vi-su
Chú vùn-chông: cobalt ke thùng-vi-su
iso NA half-life DM DE (MeV) DP
56Co syn 77.27 d ε 4.566 56Fe
57Co syn 271.79 d ε 0.836 57Fe
58Co syn 70.86 d ε 2.307 58Fe
59Co 100% 59Co is stable with 32 neutrons
60Co syn 5.2714 y β, γ 2.824 60Ni