Phî, 33 As ngoi-kôn
metallic grey Kî-pún sin-sit Miàng, fù-ho
Phî, As Yîn-ngî
arsenic thùng-su-thí
grey (most common), yellow, black ngoi-hìn
metallic grey Phî chhai chû-khì-péu ke vi-chi
ngièn-chṳ́ sì-sú
33 ngièn-chṳ́-liòng (±)
74.921595(6)[1] ngièn-su lui-phe̍t
lui-kîm-su̍k Chhu̍k , fûn-khî
15 chhu̍k , p-block chû-khì
period 4 thien-chṳ́ phài-lie̍t
[Ar ] 3d10 4s2 4p3 per shell
2, 8, 18, 5 vu̍t-lî sin-chṳt Siông
ku-thí Sublimation point
887 K (615 °C, 1137 °F) Me̍t-thu near Sit-vûn
5.727 g·cm−3
5.22 g·cm−3 Sâm-siong-tiám
1090 K, 3628 kPa[2] lìm-kie-tiám
1673 K, ? MPa Yùng-fa-ngie̍t
grey: 24.44 kJ·mol−1 Chîn-fat-ngie̍t
34.76 kJ·mol−1 (?) Ngie̍t-yùng-liong
24.64 J·mol−1 ·K−1
chîn-hi-ap
P (Pa)
1
10
100
1 k
10 k
100 k
chhai T (K)
553
596
646
706
781
874
Ngièn-chṳ́ sin-chṳt Yông-fa-su
5 , 4, 3 , 2, 1,[3] −1, −2, −3 (a mildly acid ic oxide) Thien-fu-sin
Pauling scale: 2.18 Thien-lì-nèn
1st: 947.0 kJ·mol−1 2nd: 1798 kJ·mol−1 3rd: 2735 kJ·mol−1 (more ) Ngièn-chṳ́ pan-kang
empirical: 119 pm Khiung-ka pan-kang
119±4 pm Van der Waals pan-kang
185 pm Miscellanea Chîn-thí keu-chho
rhombohedral Ngie̍t-phàng-chong
5.6 µm·m−1 ·K−1 [4] (at r.t. ) Ngie̍t-chhòn-thô-li̍t
50.2 W·m−1 ·K−1 Thien-chú-li̍t
333 nΩ·m (at 20 °C) Chhṳ̀-sin
diamagnetic [5] Young's modulus
8 GPa Bulk modulus
22 GPa Mohs hardness
3.5 Brinell hardness
1440 MPa CAS Registry Number
7440-38-2 Le̍k-sú Fat-hien
Early Bronze Age (2500 BC ) First isolation
Albertus Magnus (1250) Chui vún-thin ke thùng-vi-su
Chú vùn-chông: Phî ke thùng-vi-su
Phî (砒), fe̍t-chá ham-cho phî-su (砒素), sṳ̂n (砷), he yit-chúng fa-ho̍k ngièn-su , fa-ho̍k fù-ho vì As , ngièn-chṳ́ su-muk he 33 , chhai ngièn-su chû-khì-péu lî-tú phài thi 33 vi.