Kadmium

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

Cadmium, ₄₈Cd

Cadmium
Pípè	/ˈkædmiəm/ ​(KAD-mee-əm)
Ìhànsójú	silvery gray metallic
Ìwúwo átọ̀mù Ar, std(Cd)	112.414(4)[1]
Cadmium ní orí tábìlì àyè
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Nọ́mbà átọ̀mù (Z)	48
Ẹgbẹ́	group 12
Àyè	àyè 5
Àdìpọ̀	Àdìpọ̀-d
Ẹ̀ka ẹ́límẹ́ntì	Post-transition metal
Ìtò ẹ̀lẹ́ktrọ́nù	[Kr] 4d10 5s2
Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan	2, 8, 18, 18, 2
Àwọn ohun ìní ara
Ìfarahàn at STP	solid
Ìgbà ìyọ́	594.22 K ​(321.07 °C, ​609.93 °F)
Ígbà ìhó	1040 K ​(767 °C, ​1413 °F)
Kíki (near r.t.)	8.65 g/cm3
when liquid (at m.p.)	7.996 g/cm3
Heat of fusion	6.21 kJ/mol
Heat of	99.87 kJ/mol
Molar heat capacity	26.020 J/(mol·K)
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, +2 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment
Electronegativity	Pauling scale: 1.69
Atomic radius	empirical: 151 pm
Covalent radius	144±9 pm
Van der Waals radius	158 pm
Color lines in a spectral range Spectral lines of cadmium
Other properties
Natural occurrence	primordial
Crystal structure	​hexagonal
Speed of sound thin rod	2310 m/s (at 20 °C)
Thermal expansion	30.8 µm/(m·K) (at 25 °C)
Thermal conductivity	96.6 W/(m·K)
Electrical resistivity	(22 °C) 72.7 n Ω·m
Magnetic ordering	diamagnetic[2]
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 Number	7440-43-9
Main isotopes of cadmium
Iso­tope Abun­dance Half-life (t1/2) Decay mode Pro­duct 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
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