Magnesium(Hon-ngî: 鎂 měi) he yit-chúng fa-ho̍k ngièn-su, fa-ho̍k fù-ho vì Mg, ngièn-chṳ́ su-muk he 12, chhai ngièn-su chû-khì-péu lî-tú phài thi 12 vi.
Magnesium
All data from the card 38
- Miàng, fù-ho
- magnesium, Mg
- ngoi-hìn
- shiny grey solid
- ngièn-chṳ́ sì-sú
- 12
- ngièn-chṳ́-liòng
- 24.305 (24.304–24.307)
- ngièn-su lui-phe̍t
- kán-thú kîm-su̍k
- Chhu̍k, fûn-khî
- 2 chhu̍k, s-block
- chû-khì
- period 3
- thien-chṳ́ phài-lie̍t
- [Ne] 3s2
- per shell
- 2, 8, 2
- Siông
- ku-thí
- yùng-tiám
- 923 K (650 °C, 1202 °F)
- pui-tiám
- 1363 K (1091 °C, 1994 °F)
- Me̍t-thu near Sit-vûn
- 1.738 g·cm−3
- Yùng-fa-ngie̍t
- 8.48 kJ·mol−1
- Chîn-fat-ngie̍t
- 128 kJ·mol−1
- Ngie̍t-yùng-liong
- 24.869 J·mol−1·K−1
- Yông-fa-su
- +2, +1 (a strongly basic oxide)
- Thien-fu-sin
- Pauling scale: 1.31
- Thien-lì-nèn
- 1st: 737.7 kJ·mol−1 2nd: 1450.7 kJ·mol−1 3rd: 7732.7 kJ·mol−1 (more)
- Ngièn-chṳ́ pan-kang
- empirical: 160 pm
- Khiung-ka pan-kang
- 141±7 pm
- Van der Waals pan-kang
- 173 pm
- Chîn-thí keu-chho
- hexagonal close-packed (hcp)
- Sâng-suk thin rod
- 4940 m·s−1 (at r.t.) (annealed)
- Ngie̍t-phàng-chong
- 24.8 µm·m−1·K−1 (at 25 °C)
- Ngie̍t-chhòn-thô-li̍t
- 156 W·m−1·K−1
- Thien-chú-li̍t
- 43.9 nΩ·m (at 20 °C)
- Chhṳ̀-sin
- paramagnetic
- Young's modulus
- 45 GPa
- Shear modulus
- 17 GPa
- Bulk modulus
- 45 GPa
- Poisson ratio
- 0.290
- Mohs hardness
- 1–2.5
- Brinell hardness
- 44–260 MPa
- CAS Registry Number
- 7439-95-4
- Hí-miàng
- after Magnesia, Greece
- Fat-hien
- Joseph Black (1755)
- First isolation
- Humphry Davy (1808)
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