Americium, 95 Am silvery whiteSpectral lines of americium Miàng, fù-ho Americium, Am ngoi-hìn silvery white ngièn-chṳ́ sì-sú 95 ngièn-chṳ́-liòng (243) ngièn-su lui-phe̍t actinium-hi Chhu̍k , fûn-khî n/a , f-block chû-khì period 7 thien-chṳ́ phài-lie̍t [ Rn ] 5f7 7s2 per shell 2, 8, 18, 32, 25, 8, 2 Siông ku-thí yùng-tiám 1449 K (1176 °C, 2149 °F) pui-tiám 2880 K (2607 °C, 4725 °F) (calculated) Me̍t-thu near Sit-vûn 12 g·cm−3 Yùng-fa-ngie̍t 14.39 kJ·mol−1 Ngie̍t-yùng-liong 62.7 J·mol−1 ·K−1 chîn-hi-ap
P (Pa)
1
10
100
1 k
10 k
100 k
chhai T (K)
1239
1356
Yông-fa-su 8, 7, 6, 5, 4, 3 , 2 (an amphoteric oxide)Thien-fu-sin Pauling scale: 1.3 Thien-lì-nèn 1st: 578 kJ·mol−1 Ngièn-chṳ́ pan-kang empirical: 173 pm Khiung-ka pan-kang 180±6 pm Chîn-thí keu-chho double hexagonal close-packed (dhcp)Ngie̍t-chhòn-thô-li̍t 10 W·m−1 ·K−1 Thien-chú-li̍t 0.69 µΩ·m[ 1] Chhṳ̀-sin paramagnetic CAS Registry Number 7440-35-9 Hí-miàng after the Americas Fat-hien Glenn T. Seaborg , Ralph A. James , Leon O. Morgan , Albert Ghiorso (1944)Chú vùn-chông: Americium ke thùng-vi-su
Americium (Hon-ngî : 鋂 méi fe̍t-chá 鎇 méi ) he yit-chúng fa-ho̍k ngièn-su , fa-ho̍k fù-ho vì Am , ngièn-chṳ́ su-muk he 95 .
↑ Muller, W.; Schenkel, R.; Schmidt, H. E.; Spirlet, J. C.; McElroy, D. L.; Hall, R. O. A.; Mortimer, M. J. (1978). "The electrical resistivity and specific heat of americium metal". Journal of Low Temperature Physics 30 (5–6): 561. Bibcode :1978JLTP...30..561M . doi :10.1007/BF00116197 .