Zirconium, 40 Zr silvery white Miàng, fù-ho Zirconium, Zr ngoi-hìn silvery white ngièn-chṳ́ sì-sú 40 ngièn-chṳ́-liòng (± ) 91.224(2)[ 1] ngièn-su lui-phe̍t ko-thu kîm-su̍k Chhu̍k , fûn-khî 4 chhu̍k , d-block chû-khì period 5 thien-chṳ́ phài-lie̍t [ Kr ] 4d2 5s2 per shell 2, 8, 18, 10, 2 Siông ku-thí yùng-tiám 2128 K (1855 °C, 3371 °F) pui-tiám 4650 K (4377 °C, 7911 °F) Me̍t-thu near Sit-vûn 6.52 g·cm−3 5.8 g·cm−3 Yùng-fa-ngie̍t 14 kJ·mol−1 Chîn-fat-ngie̍t 591 kJ·mol−1 Ngie̍t-yùng-liong 25.36 J·mol−1 ·K−1 chîn-hi-ap
P (Pa)
1
10
100
1 k
10 k
100 k
chhai T (K)
2639
2891
3197
3575
4053
4678
Yông-fa-su 4 , 3, 2, 1, −2[ 2] (an amphoteric oxide)Thien-fu-sin Pauling scale: 1.33 Thien-lì-nèn 1st: 640.1 kJ·mol−1 2nd: 1270 kJ·mol−1 3rd: 2218 kJ·mol−1 Ngièn-chṳ́ pan-kang empirical: 160 pm Khiung-ka pan-kang 175±7 pm Chîn-thí keu-chho hexagonal close-packed (hcp)Sâng-suk thin rod 3800 m·s−1 (at 20 °C) Ngie̍t-phàng-chong 5.7 µm·m−1 ·K−1 (at 25 °C) Ngie̍t-chhòn-thô-li̍t 22.6 W·m−1 ·K−1 Thien-chú-li̍t 421 nΩ·m (at 20 °C) Chhṳ̀-sin paramagnetic [ 3] Young's modulus 88 GPa Shear modulus 33 GPa Bulk modulus 91.1 GPa Poisson ratio 0.34 Mohs hardness 5.0 Vickers hardness 820–1800 MPa Brinell hardness 638–1880 MPa CAS Registry Number 7440-67-7 Hí-miàng after zircon , zargun زرگون meaning "gold-colored". Fat-hien Martin Heinrich Klaproth (1789)First isolation Jöns Jakob Berzelius (1824)Chú vùn-chông: Zirconium ke thùng-vi-su
Decay modes in parentheses are predicted, but have not yet been observed
Zirconium (Hon-ngî : 鋯 gào ) he yit-chúng fa-ho̍k ngièn-su , fa-ho̍k fù-ho vì Zr , ngièn-chṳ́ su-muk he 40 .