Americium

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.

Americium,  ₉₅Am

ngoi-kôn
silvery white Spectral lines of americium
Kî-pún sin-sit
Miàng, fù-ho	Americium, Am
ngoi-hìn	silvery white
Americium chhai chû-khì-péu ke vi-chi
Eu ↑ Am ↓ (Uqs) plutonium ← Americium → curium
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
vu̍t-lî sin-chṳt
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
Ngièn-chṳ́ sin-chṳt
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
Miscellanea
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
Chhṳ̀-sin	paramagnetic
CAS Registry Number	7440-35-9
Le̍k-sú
Hí-miàng	after the Americas
Fat-hien	Glenn T. Seaborg, Ralph A. James, Leon O. Morgan, Albert Ghiorso (1944)
Chui vún-thin ke thùng-vi-su
Chú vùn-chông: Americium ke thùng-vi-su
iso NA half-life DM DE (MeV) DP 241Am syn 432.2 y SF – – α 5.486 237Np 243Am syn 7370 y SF – – α 5.275 239Np