Strontium

Strontium sī 1 ê hoà-ha̍k goân-sò͘. I ê goân-chú-hoan sī 38, hoà-ha̍k hû-hō sī Sr.

Strontium,  ₃₈Sr

Ki-pún sèng-chit
Miâ, hû-hō	strontium, Sr
Gōa-hêng	silvery white metallic; with a pale yellow tint[1]
Strontium tī chiu-kî-piáu lāi ê ūi-tì
Ca ↑ Sr ↓ Ba rubidium ← strontium → yttrium
Goân-chú-hoan	38
Goân-chú-liōng (±)	87.62(1)[2]
Goân-sò͘ lūi-pia̍t	kiⁿ-thó͘ kim-sio̍k
Cho̍k, hun-khu	2 cho̍k, s khu
Chiu-kî	tē 5 chiu-kî
Tiān-chú pâi-lia̍t	[Kr] 5s2
per shell	2, 8, 18, 8, 2
Bu̍t-lí sèng-chit
Siòng	kò͘-thé
Iûⁿ-tiám	1050 K ​(777 °C, ​1431 °F)
Hut-tiám	1650 K ​(1377 °C, ​2511 °F)
Bi̍t-tō͘  (sek-un)	2.64 g·cm−3
2.375 g·cm−3
Iûⁿ-hoà-jia̍t	7.43 kJ·mol−1
Cheng-hoat-jia̍t	141 kJ·mol−1
Jia̍t-iông-liōng	26.4 J·mol−1·K−1
cheng-khì-ap P (Pa) 1 10 100 1 k 10 k 100 k tī T (K) 796 882 990 1139 1345 1646
Goân-chú sèng-chit
Sng-hòa-sò͘	2, 1[3] ​(a strongly basic oxide)
Tiān-hū-tō͘	Pauling scale: 0.95
Tiān-lī-lêng	1st: 549.5 kJ·mol−1 2nd: 1064.2 kJ·mol−1 3rd: 4138 kJ·mol−1
Goân-chú pòaⁿ-kèng	empirical: 215 pm
Kiōng-kè pòaⁿ-kèng	195±10 pm
Van der Waals pòaⁿ-kèng	249 pm
Cha̍p-lio̍k
Chiⁿ-thé kò͘-chō	​face-centered cubic (fcc)
Jia̍t-phòng-tiòng	22.5 µm·m−1·K−1 (at 25 °C)
Jia̍t-thoân-tō-lu̍t	35.4 W·m−1·K−1
Tiān-chó͘-lu̍t	132 nΩ·m (at 20 °C)
Chû-sèng	paramagnetic
Young hē-sò͘	15.7 GPa
Shear hē-sò͘	6.03 GPa
Poisson pí	0.28
Mohs ngē-tō͘	1.5
CAS teng-kì pian-hō	7440-24-6
Le̍k-sú
Hō-miâ	after the mineral strontianite, itself named after Strontian, Scotland
Hoat-hiān	William Cruickshank (1787)
Siōng chá hû-lî	Humphry Davy (1808)
Chòe ún-tēng ê tông-ūi-sò͘
Chú bûn-chiong: strontium ê tông-ūi-sò͘
iso NA half-life DM DE (MeV) DP 82Sr syn 25.36 d ε – 82Rb 83Sr syn 1.35 d ε – 83Rb β+ 1.23 83Rb γ 0.76, 0.36 – 84Sr 0.56% – (β+β+) 1.7867 84Kr 85Sr syn 64.84 d ε – 85Rb γ 0.514D – 86Sr 9.86% 86Sr is stable with 48 neutrons 87Sr 7.0% 87Sr is stable with 49 neutrons 88Sr 82.58% 88Sr is stable with 50 neutrons 89Sr syn 50.52 d ε 1.49 89Rb β− 0.909D 89Y 90Sr trace 28.90 y β− 0.546 90Y
Decay modes in parentheses are predicted, but have not yet been observed