Scandium

Scandium (Hon-ngî: 鈧 kàng) he yit-chúng fa-ho̍k ngièn-su, fa-ho̍k fù-ho vì Sc, ngièn-chṳ́ su-muk he 21.

Scandium,  ₂₁Sc

ngoi-kôn
silvery white
Kî-pún sin-sit
Miàng, fù-ho	Scandium, Sc
ngoi-hìn	silvery white
Scandium chhai chû-khì-péu ke vi-chi
– ↑ Sc ↓ Y koi ← Scandium → titanium
ngièn-chṳ́ sì-sú	21
ngièn-chṳ́-liòng (±)	44.955908(5)
ngièn-su lui-phe̍t	ko-thu kîm-su̍k
Chhu̍k, fûn-khî	3 chhu̍k, d-block
chû-khì	period 4
thien-chṳ́ phài-lie̍t	[Ar] 3d1 4s2
per shell	2, 8, 9, 2
vu̍t-lî sin-chṳt
Siông	ku-thí
yùng-tiám	1814 K ​(1541 °C, ​2806 °F)
pui-tiám	3109 K ​(2836 °C, ​5136 °F)
Me̍t-thu near Sit-vûn	2.985 g·cm−3
2.80 g·cm−3
Yùng-fa-ngie̍t	14.1 kJ·mol−1
Chîn-fat-ngie̍t	332.7 kJ·mol−1
Ngie̍t-yùng-liong	25.52 J·mol−1·K−1
chîn-hi-ap P (Pa) 1 10 100 1 k 10 k 100 k chhai T (K) 1645 1804 (2006) (2266) (2613) (3101)
Ngièn-chṳ́ sin-chṳt
Yông-fa-su	3, 2, 1 ​(an amphoteric oxide)
Thien-fu-sin	Pauling scale: 1.36
Thien-lì-nèn	1st: 633.1 kJ·mol−1 2nd: 1235.0 kJ·mol−1 3rd: 2388.6 kJ·mol−1 (more)
Ngièn-chṳ́ pan-kang	empirical: 162 pm
Khiung-ka pan-kang	170±7 pm
Van der Waals pan-kang	211 pm
Miscellanea
Chîn-thí keu-chho	​hexagonal close-packed (hcp)
Ngie̍t-phàng-chong	α, poly: 10.2 µm·m−1·K−1 (at r.t.)
Ngie̍t-chhòn-thô-li̍t	15.8 W·m−1·K−1
Thien-chú-li̍t	α, poly: 562 nΩ·m (at r.t., calculated)
Chhṳ̀-sin	paramagnetic
Young's modulus	74.4 GPa
Shear modulus	29.1 GPa
Bulk modulus	56.6 GPa
Poisson ratio	0.279
Brinell hardness	736–1200 MPa
CAS Registry Number	7440-20-2
Le̍k-sú
Hí-miàng	after Scandinavia
Yi-chhet	Dmitri Mendeleev (1871)
Hoat-kiàn kap siōng chá ê tông-ūi-sò͘	Lars Fredrik Nilson (1879)
Chui vún-thin ke thùng-vi-su
Chú vùn-chông: Scandium ke thùng-vi-su
iso NA half-life DM DE (MeV) DP 44m2Sc syn 58.61 h IT 44Sc γ 44Sc ε 44Ca 45Sc 100% 45Sc is stable with 24 neutrons 46Sc syn 83.79 d β− 0.3569 46Ti γ 0.889, 1.120 – 47Sc syn 3.3492 d β− 0.44, 0.60 47Ti γ 0.159 – 48Sc syn 43.67 h β− 0.661 48Ti γ 0.9, 1.3, 1.0 –