Sî (Fa-ho̍k ngièn-su)

(Chhùng-thin-hiong chhṳ Selenium)

() he yit-chúng fa-ho̍k ngièn-su, fa-ho̍k fù-ho vì Se, ngièn-chṳ́ su-muk he 34.

  1. Standard Atomic Weights 2013. Commission on Isotopic Abundances and Atomic Weights
  2. 模板:Greenwood&Earnshaw
  3. Magnetic susceptibility of the elements and inorganic compounds, in 模板:RubberBible86th
Sî 硒,  34Se
ngoi-kôn
black, red, and gray (not pictured) allotropes
Kî-pún sin-sit
Miàng, fù-ho Sî 硒, Se
ngoi-hìn black, red, and gray (not pictured) allotropes
Sî 硒 chhai chû-khì-péu ke vi-chi
Khiâng (sûng-ngièn-chṳ́ fî-kîm-su̍k)
Hoi (hî-yù hi-thí)
Lithium (kán-kîm-su̍k)
Beryllium (kán-thú kîm-su̍k)
Phìn (lui-kîm-su̍k)
Than (tô-ngièn-chṳ́ fî-kîm-su̍k)
Tham (sûng-ngièn-chṳ́ fî-kîm-su̍k)
Yông (sûng-ngièn-chṳ́ fî-kîm-su̍k)
Fuk (sûng-ngièn-chṳ́ fî-kîm-su̍k)
Nái (hî-yù hi-thí)
Na̍p (kán-kîm-su̍k)
Magnesium (kán-thú kîm-su̍k)
Lî (heu-ko-thu kîm-su̍k)
Si̍t (lui-kîm-su̍k)
Lìn (tô-ngièn-chṳ́ fî-kîm-su̍k)
Liù-vòng (tô-ngièn-chṳ́ fî-kîm-su̍k)
Liu̍k (sûng-ngièn-chṳ́ fî-kîm-su̍k)
Argon (hî-yù hi-thí)
Kap (kán-kîm-su̍k)
Koi (kán-thú kîm-su̍k)
Scandium (ko-thu kîm-su̍k)
Titanium (ko-thu kîm-su̍k)
Vanadium (ko-thu kîm-su̍k)
Chromium (ko-thu kîm-su̍k)
Manganese (ko-thu kîm-su̍k)
Thiet (ko-thu kîm-su̍k)
Cobalt (ko-thu kîm-su̍k)
Nickel (ko-thu kîm-su̍k)
Thùng (ko-thu kîm-su̍k)
Â-yèn (ko-thu kîm-su̍k)
Gallium (heu-ko-thu kîm-su̍k)
Germanium (lui-kîm-su̍k)
Phî (lui-kîm-su̍k)
Selenium (tô-ngièn-chṳ́ fî-kîm-su̍k)
Chhiu (sûng-ngièn-chṳ́ fî-kîm-su̍k)
Krypton (hî-yù hi-thí)
Rubidium (kán-kîm-su̍k)
Strontium (kán-thú kîm-su̍k)
Yttrium (ko-thu kîm-su̍k)
Zirconium (ko-thu kîm-su̍k)
Niobium (ko-thu kîm-su̍k)
Molybdenum (ko-thu kîm-su̍k)
Technetium (ko-thu kîm-su̍k)
Ruthenium (ko-thu kîm-su̍k)
Rhodium (ko-thu kîm-su̍k)
Palladium (ko-thu kîm-su̍k)
Ngiùn (ko-thu kîm-su̍k)
Cadmium (ko-thu kîm-su̍k)
Indium (heu-ko-thu kîm-su̍k)
Siak (heu-ko-thu kîm-su̍k)
Antimony (lui-kîm-su̍k)
Tellurium (lui-kîm-su̍k)
Tién (sûng-ngièn-chṳ́ fî-kîm-su̍k)
Xenon (hî-yù hi-thí)
Caesium (kán-kîm-su̍k)
Barium (kán-thú kîm-su̍k)
Lanthanum (lanthanum-hi)
Cerium (lanthanum-hi)
Praseodymium (lanthanum-hi)
Neodymium (lanthanum-hi)
Promethium (lanthanum-hi)
Samarium (lanthanum-hi)
Europium (lanthanum-hi)
Gadolinium (lanthanum-hi)
Terbium (lanthanum-hi)
Dysprosium (lanthanum-hi)
Holmium (lanthanum-hi)
Erbium (lanthanum-hi)
Thulium (lanthanum-hi)
Ytterbium (lanthanum-hi)
Lutetium (lanthanum-hi)
Hafnium (ko-thu kîm-su̍k)
Tantalum (ko-thu kîm-su̍k)
Tungsten (ko-thu kîm-su̍k)
Rhenium (ko-thu kîm-su̍k)
Osmium (ko-thu kîm-su̍k)
Iridium (ko-thu kîm-su̍k)
Pha̍k-kîm (ko-thu kîm-su̍k)
Kîm (ko-thu kîm-su̍k)
Súi-ngiùn (ko-thu kîm-su̍k)
Thallium (heu-ko-thu kîm-su̍k)
Yèn (heu-ko-thu kîm-su̍k)
Bismuth (heu-ko-thu kîm-su̍k)
Polonium (heu-ko-thu kîm-su̍k)
Astatine (lui-kîm-su̍k)
Radon (hî-yù hi-thí)
Francium (kán-kîm-su̍k)
Radium (kán-thú kîm-su̍k)
Actinium (actinium-hi)
Thorium (actinium-hi)
Protactinium (actinium-hi)
Uranium (actinium-hi)
Neptunium (actinium-hi)
Plutonium (actinium-hi)
Americium (actinium-hi)
Curium (actinium-hi)
Berkelium (actinium-hi)
Californium (actinium-hi)
Einsteinium (actinium-hi)
Fermium (actinium-hi)
Mendelevium (actinium-hi)
Nobelium (actinium-hi)
Lawrencium (actinium-hi)
Rutherfordium (ko-thu kîm-su̍k)
Dubnium (ko-thu kîm-su̍k)
Seaborgium (ko-thu kîm-su̍k)
Bohrium (ko-thu kîm-su̍k)
Hassium (ko-thu kîm-su̍k)
Meitnerium (unknown chemical properties)
Darmstadtium (unknown chemical properties)
Roentgenium (unknown chemical properties)
Copernicium (ko-thu kîm-su̍k)
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)
S

Se

Te
phîSî 硒chhiu
ngièn-chṳ́ sì-sú 34
ngièn-chṳ́-liòng (±) 78.971(8)[1]
ngièn-su lui-phe̍t   tô-ngièn-chṳ́ fî-kîm-su̍k, sometimes considered a metalloid
Chhu̍k, fûn-khî 16 chhu̍k, p-block
chû-khì period 4
thien-chṳ́ phài-lie̍t [Ar] 3d10 4s2 4p4
per shell 2, 8, 18, 6
vu̍t-lî sin-chṳt
Siông ku-thí
yùng-tiám 494 K ​(221 °C, ​430 °F)
pui-tiám 958 K ​(685 °C, ​1265 °F)
Me̍t-thu near Sit-vûn gray: 4.81 g·cm−3
alpha: 4.39 g·cm−3
vitreous: 4.28 g·cm−3
3.99 g·cm−3
lìm-kie-tiám 1766 K, 27.2 MPa
Yùng-fa-ngie̍t gray: 6.69 kJ·mol−1
Chîn-fat-ngie̍t 95.48 kJ·mol−1
Ngie̍t-yùng-liong 25.363 J·mol−1·K−1
chîn-hi-ap
P (Pa) 1 10 100 1 k 10 k 100 k
chhai T (K) 500 552 617 704 813 958
Ngièn-chṳ́ sin-chṳt
Yông-fa-su 6, 5, 4, 3, 2, 1,[2] −1, −2 ​(a strongly acidic oxide)
Thien-fu-sin Pauling scale: 2.55
Thien-lì-nèn 1st: 941.0 kJ·mol−1
2nd: 2045 kJ·mol−1
3rd: 2973.7 kJ·mol−1
Ngièn-chṳ́ pan-kang empirical: 120 pm
Khiung-ka pan-kang 120±4 pm
Van der Waals pan-kang 190 pm
Miscellanea
Chîn-thí keu-chhohexagonal
Hexagonal crystal structure for Sî 硒
Sâng-suk thin rod 3350 m·s−1 (at 20 °C)
Ngie̍t-phàng-chong amorphous: 37 µm·m−1·K−1 (at 25 °C)
Ngie̍t-chhòn-thô-li̍t amorphous: 0.519 W·m−1·K−1
Chhṳ̀-sin diamagnetic[3]
Young's modulus 10 GPa
Shear modulus 3.7 GPa
Bulk modulus 8.3 GPa
Poisson ratio 0.33
Mohs hardness 2.0
Brinell hardness 736 MPa
CAS Registry Number 7782-49-2
Le̍k-sú
Hí-miàng after Selene, Greek goddess of the moon
Hoat-kiàn kap siōng chá ê tông-ūi-sò͘ Jöns Jakob Berzelius and Johann Gottlieb Gahn (1817)
Chui vún-thin ke thùng-vi-su
Chú vùn-chông: Sî 硒 ke thùng-vi-su
iso NA half-life DM DE (MeV) DP

模板:Infobox element/isotopes decay2

74Se 0.87% (β+β+) 1.2094 74Ge

模板:Infobox element/isotopes decay2

76Se 9.36% 76Se is stable with 42 neutrons
77Se 7.63% 77Se is stable with 43 neutrons
78Se 23.78% 78Se is stable with 44 neutrons
79Se trace 3.27×105 y β 0.151 79Br
80Se 49.61% (ββ) 0.1339 80Kr
82Se 8.73% 1.08×1020 y ββ 2.995 82Kr
Decay modes in parentheses are predicted, but have not yet been observed