Kadmium

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Cadmium, 48Cd
Àdàkọ:Infobox element/symbol-to-top-image/alt
Cadmium
Pípè /ˈkædmiəm/ (KAD-mee-əm)
Ìhànsójúsilvery gray metallic
Ìwúwo átọ̀mù Ar, std(Cd)112.414(4)Àdàkọ:CIAAW2013
Cadmium ní orí tábìlì àyè
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Zn

Cd

Hg
silvercadmiumindium
Nọ́mbà átọ̀mù (Z)48
Ẹgbẹ́group 12
Àyèàyè 5
Àdìpọ̀Àdìpọ̀-d
Ẹ̀ka ẹ́límẹ́ntì  [[Àdàkọ:Infobox element/symbol-to-category]]
Ìtò ẹ̀lẹ́ktrọ́nùÀdàkọ:Infobox element/symbol-to-electron-configuration
Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan2, 8, 18, 18, 2
Àwọn ohun ìní ara
Ìfarahàn at STPsolid
Ìgbà ìyọ́594.22 K ​(321.07 °C, ​609.93 °F)
Ígbà ìhó1040 K ​(767 °C, ​1413 °F)
Kíki (near r.t.)8.65 g/cm3
when liquid (at m.p.)7.996 g/cm3
Heat of fusion6.21 kJ/mol
Heat of 99.87 kJ/mol
Molar heat capacity26.020 J/(mol·K)
 pressure
Atomic properties
Oxidation statesÀdàkọ:Infobox element/symbol-to-oxidation-state
ElectronegativityPauling scale: 1.69
Atomic radiusempirical: 151 pm
Covalent radius144±9 pm
Van der Waals radius158 pm
Àdàkọ:Infobox element/spectral lines
Other properties
Natural occurrenceÀdàkọ:Infobox element/symbol-to-occurrence
Crystal structureÀdàkọ:Infobox element/crystal structure
Speed of sound thin rod2310 m/s (at 20 °C)
Thermal expansion30.8 µm/(m·K) (at 25 °C)
Thermal conductivity96.6 W/(m·K)
Electrical resistivity(22 °C) 72.7 n Ω·m
Magnetic orderingdiamagnetic[1]
Young's modulus50 GPa
Shear modulus19 GPa
Bulk modulus42 GPa
Poisson ratio0.30
Mohs hardness2.0
Brinell hardness203 MPa
CAS Number7440-43-9
Main isotopes of cadmium
[[Isotope|IsoÀdàkọ:Shytope]] [[Natural abundance|AbunÀdàkọ:Shydance]] Half-life (t1/2) Decay mode [[Decay product|ProÀdàkọ:Shyduct]]
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
Àdàkọ:Category-inline
| references

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


Itokasi[àtúnṣe | àtúnṣe àmìọ̀rọ̀]

  1. Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81st edition, CRC press.