Koi

Koi (鈣) he yit-chúng fa-ho̍k ngièn-su, fa-ho̍k fù-ho vì Ca, ngièn-chṳ́ su-muk he 20, chhai Ngièn-su chû-khì-péu chûng thi-ngi-sṳ̍p vi.

Koi,  20Ca
ngoi-kôn
dull gray, silver; with a pale yellow tint
Koi
Koi
Spectral lines of calcium
Kî-pún sin-sit
Miàng, fù-ho Koi, Ca
Yîn-ngî calcium
ngoi-hìn dull gray, silver; with a pale yellow tint
Koi 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)
Mg

Ca

Sr
KapKoiscandium
ngièn-chṳ́ sì-sú 20
ngièn-chṳ́-liòng (±) 40.078(4)
ngièn-su lui-phe̍t   kán-thú kîm-su̍k
Chhu̍k, fûn-khî 2 chhu̍k, s-block
chû-khì period 4
thien-chṳ́ phài-lie̍t [Ar] 4s2
per shell 2, 8, 8, 2
vu̍t-lî sin-chṳt
Siông ku-thí
yùng-tiám 1115 K ​(842 °C, ​1548 °F)
pui-tiám 1757 K ​(1484 °C, ​2703 °F)
Me̍t-thu near Sit-vûn 1.55 g·cm−3
1.378 g·cm−3
Yùng-fa-ngie̍t 8.54 kJ·mol−1
Chîn-fat-ngie̍t 154.7 kJ·mol−1
Ngie̍t-yùng-liong 25.929 J·mol−1·K−1
chîn-hi-ap
P (Pa) 1 10 100 1 k 10 k 100 k
chhai T (K) 864 956 1071 1227 1443 1755
Ngièn-chṳ́ sin-chṳt
Yông-fa-su +2, +1, −1 ​(a strongly basic oxide)
Thien-fu-sin Pauling scale: 1.00
Thien-lì-nèn 1st: 589.8 kJ·mol−1
2nd: 1145.4 kJ·mol−1
3rd: 4912.4 kJ·mol−1
(more)
Ngièn-chṳ́ pan-kang empirical: 197 pm
Khiung-ka pan-kang 176±10 pm
Van der Waals pan-kang 231 pm
Miscellanea
Chîn-thí keu-chho ​face-centered cubic (fcc)
Face-centered cubic crystal structure for Koi
Sâng-suk thin rod 3810 m·s−1 (at 20 °C)
Ngie̍t-phàng-chong 22.3 µm·m−1·K−1 (at 25 °C)
Ngie̍t-chhòn-thô-li̍t 201 W·m−1·K−1
Thien-chú-li̍t 33.6 nΩ·m (at 20 °C)
Chhṳ̀-sin diamagnetic
Young's modulus 20 GPa
Shear modulus 7.4 GPa
Bulk modulus 17 GPa
Poisson ratio 0.31
Mohs hardness 1.75
Brinell hardness 170–416 MPa
CAS Registry Number 7440-70-2
Le̍k-sú
Hoat-kiàn kap siōng chá ê tông-ūi-sò͘ Humphry Davy (1808)
Chui vún-thin ke thùng-vi-su
Chú vùn-chông: Koi ke thùng-vi-su
iso NA half-life DM DE (MeV) DP
40Ca 96.941% >5.9×1021 y +β+) 0.194 40Ar
41Ca trace 1.03×105 y ε 41K
42Ca 0.647% 42Ca is stable with 22 neutrons
43Ca 0.135% 43Ca is stable with 23 neutrons
44Ca 2.086% 44Ca is stable with 24 neutrons
45Ca syn 162.7 d β 0.258 45Sc
46Ca 0.004% >8.8×1022 y β) 0.988 46Ti
47Ca syn 4.536 d β 0.694, 1.99 47Sc
γ 1.297
48Ca 0.187% 4.3×1019 y ββ 4.274 48Ti
) 0.0058 48Sc
Decay modes in parentheses are predicted, but have not yet been observed

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