Magnesium

Magnesium,  ₁₂Mg

Spectral lines of magnesium
Ki-pún sèng-chit
Miâ, hû-hō	magnesium, Mg
Phian-miâ	khó͘-thó͘
Gōa-hêng	shiny grey solid
Magnesium tī chiu-kî-piáu lāi ê ūi-tì
Be ↑ Mg ↓ Ca Natrium ← magnesium → a-lú-mih
Goân-chú-hoan	12
Goân-chú-liōng	24.305 (24.304–24.307)
Goân-sò͘ lūi-pia̍t	kiⁿ-thó͘ kim-sio̍k
Cho̍k, hun-khu	2 cho̍k, s khu
Chiu-kî	tē 3 chiu-kî
Tiān-chú pâi-lia̍t	[Ne] 3s2
per shell	2, 8, 2
Bu̍t-lí sèng-chit
Siòng	kò͘-thé
Iûⁿ-tiám	923 K ​(650 °C, ​1202 °F)
Hut-tiám	1363 K ​(1091 °C, ​1994 °F)
Bi̍t-tō͘  (sek-un)	1.738 g·cm−3
1.584 g·cm−3
Iûⁿ-hoà-jia̍t	8.48 kJ·mol−1
Cheng-hoat-jia̍t	128 kJ·mol−1
Jia̍t-iông-liōng	24.869 J·mol−1·K−1
cheng-khì-ap P (Pa) 1 10 100 1 k 10 k 100 k tī T (K) 701 773 861 971 1132 1361
Goân-chú sèng-chit
Sng-hòa-sò͘	+2, +1 ​(a strongly basic oxide)
Tiān-hū-tō͘	Pauling scale: 1.31
Tiān-lī-lêng	1st: 737.7 kJ·mol−1 2nd: 1450.7 kJ·mol−1 3rd: 7732.7 kJ·mol−1 (more)
Goân-chú pòaⁿ-kèng	empirical: 160 pm
Kiōng-kè pòaⁿ-kèng	141±7 pm
Van der Waals pòaⁿ-kèng	173 pm
Cha̍p-lio̍k
Chiⁿ-thé kò͘-chō	​hexagonal close-packed (hcp)
Siaⁿ-sok (sòe kùn-á)	4940 m·s−1 (at r.t.) (annealed)
Jia̍t-phòng-tiòng	24.8 µm·m−1·K−1 (at 25 °C)
Jia̍t-thoân-tō-lu̍t	156 W·m−1·K−1
Tiān-chó͘-lu̍t	43.9 nΩ·m (at 20 °C)
Chû-sèng	paramagnetic
Young hē-sò͘	45 GPa
Shear hē-sò͘	17 GPa
Bulk hē-sò͘	45 GPa
Poisson pí	0.290
Mohs ngē-tō͘	1–2.5
Brinell ngē-tō͘	44–260 MPa
CAS teng-kì pian-hō	7439-95-4
Le̍k-sú
Hō-miâ	after Magnesia, Greece
Hoat-hiān	Joseph Black (1755)
Siōng chá hû-lî	Humphry Davy (1808)
Chòe ún-tēng ê tông-ūi-sò͘
Chú bûn-chiong: magnesium ê tông-ūi-sò͘
iso NA half-life DM DE (MeV) DP 24Mg 78.99% 24Mg is stable with 12 neutrons 25Mg 10.00% 25Mg is stable with 13 neutrons 26Mg 11.01% 26Mg is stable with 14 neutrons

Magnesium, ia̍h-sī kiò chò khó͘-thó͘ (苦土), sī chi̍t khoán hoà-ha̍k goân-sò͘, hû-hō sī Mg, goân-chú-hoan 12, sio̍k tē-jī cho̍k, ia̍h-tio̍h-sī alkali-thô͘ kim-sio̍k (alkaline earth metal).