Molybdenum

Molybdenum (Hon-ngî: 鉬 mù) he yit-chúng fa-ho̍k ngièn-su, fa-ho̍k fù-ho vì Mo, ngièn-chṳ́ su-muk he 42.

Molybdenum,  ₄₂Mo

ngoi-kôn
gray metallic
Kî-pún sin-sit
Miàng, fù-ho	Molybdenum, Mo
ngoi-hìn	gray metallic
Molybdenum chhai chû-khì-péu ke vi-chi
Cr ↑ Mo ↓ W niobium ← Molybdenum → technetium
ngièn-chṳ́ sì-sú	42
ngièn-chṳ́-liòng (±)	95.95(1)
ngièn-su lui-phe̍t	ko-thu kîm-su̍k
Chhu̍k, fûn-khî	6 chhu̍k, d-block
chû-khì	period 5
thien-chṳ́ phài-lie̍t	[Kr] 4d5 5s1
per shell	2, 8, 18, 13, 1
vu̍t-lî sin-chṳt
Siông	ku-thí
yùng-tiám	2896 K ​(2623 °C, ​4753 °F)
pui-tiám	4912 K ​(4639 °C, ​8382 °F)
Me̍t-thu near Sit-vûn	10.28 g·cm−3
9.33 g·cm−3
Yùng-fa-ngie̍t	37.48 kJ·mol−1
Chîn-fat-ngie̍t	598 kJ·mol−1
Ngie̍t-yùng-liong	24.06 J·mol−1·K−1
chîn-hi-ap P (Pa) 1 10 100 1 k 10 k 100 k chhai T (K) 2742 2994 3312 3707 4212 4879
Ngièn-chṳ́ sin-chṳt
Yông-fa-su	6, 5, 4, 3, 2, 1, −1, −2, −4 ​(a strongly acidic oxide)
Thien-fu-sin	Pauling scale: 2.16
Thien-lì-nèn	1st: 684.3 kJ·mol−1 2nd: 1560 kJ·mol−1 3rd: 2618 kJ·mol−1
Ngièn-chṳ́ pan-kang	empirical: 139 pm
Khiung-ka pan-kang	154±5 pm
Miscellanea
Chîn-thí keu-chho	​body-centered cubic (bcc)
Sâng-suk thin rod	5400 m·s−1 (at r.t.)
Ngie̍t-phàng-chong	4.8 µm·m−1·K−1 (at 25 °C)
Ngie̍t-chhòn-thô-li̍t	138 W·m−1·K−1
Ngie̍t-khok-san-li̍t	54.3 mm2·s−1 (at 300 K)
Thien-chú-li̍t	53.4 nΩ·m (at 20 °C)
Chhṳ̀-sin	paramagnetic
Young's modulus	329 GPa
Shear modulus	126 GPa
Bulk modulus	230 GPa
Poisson ratio	0.31
Mohs hardness	5.5
Vickers hardness	1400–2740 MPa
Brinell hardness	1370–2500 MPa
CAS Registry Number	7439-98-7
Le̍k-sú
Fat-hien	Carl Wilhelm Scheele (1778)
First isolation	Peter Jacob Hjelm (1781)
Chui vún-thin ke thùng-vi-su
Chú vùn-chông: Molybdenum ke thùng-vi-su
iso NA half-life DM DE (MeV) DP 92Mo 14.84% >1.9×1020 y (β+β+) 1.6491 92Zr 93Mo syn 4×103 y ε – 93Nb 94Mo 9.25% – (SF) <4.485 95Mo 15.92% – (SF) <4.531 96Mo 16.68% – (SF) <5.771 97Mo 9.55% – (SF) <6.226 98Mo 24.13% >1×1014 y (β−β−) 0.1125 98Ru 99Mo syn 65.94 h β− 0.436, 1.214 99mTc γ 0.74, 0.36, 0.14 – 100Mo 9.63% 7.8×1018 y β−β− 3.04 100Ru
Decay modes in parentheses are predicted, but have not yet been observed