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Cadmium, 48 Cadmium Pípè / ˈ k æ d m i ə m / (KAD -mee-əm Ìhànsójú silvery gray metallic Ìwúwo átọ̀mù A r, std (Cd) 112.414(4) [ 1] Cadmium ní orí tábìlì àyè
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 cadmiumOther 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
Àdàkọ:Category-inline references
Kadmium (pípè /ˈkædmiəm/ KAD -mee-əmipilese elegbogi pelu ami-idamo Cd ati nomba atomu 48.
↑ Meija, Juris; Coplen, Tyler B.; Berglund, Michael; Brand, Willi A.; De Bièvre, Paul; Gröning, Manfred; Holden, Norman E.; Irrgeher, Johanna et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry 88 (3): 265–91. doi :10.1515/pac-2015-0305 . ↑ Magnetic susceptibility of the elements and inorganic compounds , in Handbook of Chemistry and Physics 81st edition, CRC press.
