Palladium

Palladium,  ₄₆Pd

Ki-pún sèng-chit
Miâ, hû-hō	palladium, Pd
Gōa-hêng	silvery white
Palladium tī chiu-kî-piáu lāi ê ūi-tì
Ni ↑ Pd ↓ Pt rhodium ← palladium → gîn
Goân-chú-hoan	46
Goân-chú-liōng (±)	106.42(1)
Goân-sò͘ lūi-pia̍t	kòe-tō͘ kim-sio̍k
Cho̍k, hun-khu	10 cho̍k, d khu
Chiu-kî	tē 5 chiu-kî
Tiān-chú pâi-lia̍t	[Kr] 4d10
per shell	2, 8, 18, 18
Bu̍t-lí sèng-chit
Siòng	solid
Iûⁿ-tiám	1828.05 K ​(1554.9 °C, ​2830.82 °F)
Hut-tiám	3236 K ​(2963 °C, ​5365 °F)
Bi̍t-tō͘  (sek-un)	12.023 g·cm−3
10.38 g·cm−3
Iûⁿ-hoà-jia̍t	16.74 kJ·mol−1
Cheng-hoat-jia̍t	358 kJ·mol−1
Jia̍t-iông-liōng	25.98 J·mol−1·K−1
cheng-khì-ap P (Pa) 1 10 100 1 k 10 k 100 k tī T (K) 1721 1897 2117 2395 2753 3234
Goân-chú sèng-chit
Sng-hòa-sò͘	0, +1, +2, +3, +4, +5, +6 ​(a mildly basic oxide)
Tiān-hū-tō͘	Pauling scale: 2.20
Tiān-lī-lêng	1st: 804.4 kJ·mol−1 2nd: 1870 kJ·mol−1 3rd: 3177 kJ·mol−1
Goân-chú pòaⁿ-kèng	empirical: 137 pm
Kiōng-kè pòaⁿ-kèng	139±6 pm
Van der Waals pòaⁿ-kèng	163 pm
Cha̍p-lio̍k
Chiⁿ-thé kò͘-chō	​face-centered cubic (fcc)
Siaⁿ-sok (sòe kùn-á)	3070 m·s−1 (at 20 °C)
Jia̍t-phòng-tiòng	11.8 µm·m−1·K−1 (at 25 °C)
Jia̍t-thoân-tō-lu̍t	71.8 W·m−1·K−1
Tiān-chó͘-lu̍t	105.4 nΩ·m (at 20 °C)
Chû-sèng	paramagnetic
Young hē-sò͘	121 GPa
Shear hē-sò͘	44 GPa
Bulk hē-sò͘	180 GPa
Poisson pí	0.39
Mohs ngē-tō͘	4.75
Vickers ngē-tō͘	400–600 MPa
Brinell ngē-tō͘	320–610 MPa
CAS teng-kì pian-hō	7440-05-3
Le̍k-sú
Hō-miâ	after asteroid Pallas, itself named after Pallas Athena
Hoat-hiān kap siōng chá ê tông-ūi-sò͘	William Hyde Wollaston (1803)
Chòe ún-tēng ê tông-ūi-sò͘
Chú bûn-chiong: palladium ê tông-ūi-sò͘
iso NA half-life DM DE (MeV) DP 100Pd syn 3.63 d ε – 100Rh γ 0.084, 0.074, 0.126 – 102Pd 1.02% – (β+β+) 1.1720 102Ru 103Pd syn 16.991 d ε – 103Rh 104Pd 11.14% – (SF) <18.969 105Pd 22.33% – (SF) <18.247 106Pd 27.33% – (SF) <16.806 107Pd trace 6.5×106 y β− 0.033 107Ag 108Pd 26.46% – (SF) <16.102 110Pd 11.72% >6×1017 y β−β− 1.9997 110Cd
Decay modes in parentheses are predicted, but have not yet been observed

Palladium sī 1 ê hoà-ha̍k goân-sò͘. I ê goân-chú-hoan sī 46, hoà-ha̍k hû-hō sī Pd.