Kadmium

Kadmium (pípè /ˈkædmiəm/, KAD-mee-əm) je ipilese elegbogi pelu ami-idamo Cd ati nomba atomu 48.

Cadmium
48Cd
Zn ↑ Cd ↓ Hg Tábìlì ìdásìkò silver ← cadmium → indium
Ìhànsójú
silvery gray metallic
Àwọn ìdámọ́ wíwọ́pọ̀
Orúkọ, àmì-ìdámọ́, nọ́mbà	cadmium, Cd, 48
Ẹ̀ka ẹ́límẹ̀nti	transition metal Alternatively considered a post-transition metal
Ẹgbẹ́, àsìkò, àdìpò	12, 5, d
Ìwúwo átọ́mù	112.411
Ìtòléra ẹ̀lẹ́ktrónì	[Kr] 5s2 4d10 2, 8, 18, 18, 2
Physical properties
Phase	solid
Density (near r.t.)	8.65 g·cm−3
Liquid density at m.p.	7.996 g·cm−3
Melting point	594.22 K, 321.07 °C, 609.93 °F
Boiling point	1040 K, 767 °C, 1413 °F
Heat of fusion	6.21 kJ·mol−1
Heat of vaporization	99.87 kJ·mol−1
Molar heat capacity	26.020 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 530 583 654 745 867 1040
Atomic properties
Oxidation states	2, 1 (mildly basic oxide)
Electronegativity	1.69 (Pauling scale)
Ionization energies	1st: 867.8 kJ·mol−1
	2nd: 1631.4 kJ·mol−1
	3rd: 3616 kJ·mol−1
Atomic radius	151 pm
Covalent radius	144±9 pm
Van der Waals radius	158 pm
Miscellanea
Crystal structure	hexagonal
Magnetic ordering	diamagnetic
Electrical resistivity	(22 °C) 72.7 nΩ·m
Thermal conductivity	96.6 W·m−1·K−1
Thermal expansion	(25 °C) 30.8 µm·m−1·K−1
Speed of sound (thin rod)	(20 °C) 2310 m·s−1
Young's modulus	50 GPa
Shear modulus	19 GPa
Bulk modulus	42 GPa
Poisson ratio	0.30
Mohs hardness	2.0
Brinell hardness	203 MPa
CAS registry number	7440-43-9
Àwọn ísótòpù dídúró jùlọ
Main article: Àwọn ísótòpù cadmium
iso NA half-life DM DE (MeV) DP 106Cd 1.25% >9.5×1017 y εε2ν - 106Pd 107Cd syn 6.5 h ε 1.417 107Ag 108Cd 0.89% >6.7×1017 y εε2ν - 108Pd 109Cd syn 462.6 d ε 0.214 109Ag 110Cd 12.49% 110Cd is stable with 62 neutrons 111Cd 12.8% 111Cd is stable with 63 neutrons 112Cd 24.13% 112Cd is stable with 64 neutrons 113Cd 12.22% 7.7×1015 y β− 0.316 113In 113mCd syn 14.1 y β− 0.580 113In IT 0.264 113Cd 114Cd 28.73% >9.3×1017 y ββ2ν - 114Sn 115Cd syn 53.46 h β− 1.446 115In 116Cd 7.49% 2.9×1019 y ββ2ν - 116Sn