Cadmium (Cd) is a chemical element of the periodic table, located in the group 12 and the period 5, and is having the atomic number 48. It is a soft, lustrous, malleable, silvery-white post transition metal, whose name comes from the Latin word “cadmia”, which means the mineral calamine.
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| – d block |
FAQs on Cadmium Element
| Cadmium |
|---|
| ‣ What does cadmium look like? Appearance: silvery bluish-gray metallic |
| ‣ Who discovered cadmium? When was cadmium discovered? Discovery and first isolation: Karl Samuel Leberecht Hermann and Friedrich Stromeyer (1817) Named by: Friedrich Stromeyer (1817) |
‣ What row is cadmium in on the periodic table? Location: Cadmium is found in the fifth row of the periodic table below the zinc element. |
| ‣ What is cadmium’s atomic number? Atomic number (Z): 48 |
| ‣ What is the symbol for cadmium? Symbol: Cd |
| ‣ Cadmium atomic weight: 112.414 |
| ‣ What block does cadmium belong to? Block: d-block |
| ‣ What group is cadmium in on the periodic table? Group: 12 |
| ‣ What period is cadmium in on the periodic table? Period: 5 |
| ‣ Cadmium atomic radius: empirical: 151 pm |
| ‣ Cadmium covalent radius: 144±9 pm |
| ‣ Cadmium Van der Waals radius: 158 pm |
| ‣ What is the melting point of cadmium? Melting point: 594.22 K (321.07 °C, 609.93 °F) |
| ‣ What is the boiling point of cadmium? Boiling point: 1040 K (767 °C, 1413 °F) |
| ‣ How many electron shells does cadmium have? Electrons per shell: 2, 8, 18, 18, 2 |
| ‣ What is the electron configuration for cadmium? Electron configuration: [Kr] 4d10 5s2 |
| ‣ Cadmium ionization energies: 1st: 867.8 kJ/mol 2nd: 1631.4 kJ/mol 3rd: 3616 kJ/mol |
| ‣ What is the phase of the cadmium? Phase (at r.t): solid |
| ‣ What is the density of cadmium? Density (near r.t): 8.65 g/cm3 when liquid (at m.p): 7.996 g/cm3 |
| ‣ Cadmium magnetic ordering: diamagnetic |
| ‣ Cadmium natural occurrence: primordial |
| ‣ Cadmium oxidation state: +2 |
| ‣ What’s the electronegativity of cadmium? Electronegativity: Pauling scale: 1.69 |
| ‣ Cadmium poisson’s ratio: 0.30 |
| ‣ Cadmium heat of fusion: 6.21 kJ/mol |
| ‣ Cadmium heat of vaporization: 99.87 kJ/mol |
| ‣ Cadmium molar heat capacity: 26.020 J/(mol K) |
| ‣ Cadmium molar magnetic susceptibility: -19.8 × 10-6 cm3/mol (298 K) |
| ‣ Speed of sound in cadmium: 2310 m/s (at 20 °C) |
| ‣ Cadmium crystal structure: hexagonal close-packed (hcp) |
| ‣ Thermal expansion of cadmium: 30.8 µm/(m.K) (at 25 °C) |
| ‣ Thermal conductivity of cadmium: 96.6 W/(m.K) |
| ‣ Cadmium electrical resistivity: 72.7 nΩ.m (at 22 °C) |
| ‣ Cadmium hardness Mohs hardness: 2.0 Brinell hardness: 203-220 MPa |
| ‣ Young’s modulus of cadmium: 50 GPa |
| ‣ Shear modulus of cadmium: 19 GPa |
| ‣ Bulk modulus of cadmium: 42 GPa |
| ‣ Cadmium CAS number: 7440-43-9 |
‣ Cadmium vapor pressure
| Vapor pressure | ||||||
|---|---|---|---|---|---|---|
| P (Pa) | 1 | 10 | 100 | 1 k | 10 k | 100 k |
| at T (K) | 530 | 583 | 654 | 745 | 867 | 1040 |
‣ How many isotopes does cadmium have?
| Main isotopes of cadmium | ||||
|---|---|---|---|---|
| Isotope | Abundance | Half-life (t1/2) | Decay mode | Product |
| 106Cd | 1.25 % | stable | ||
| 107Cd | syn | 6.5 h | ε | 107Ag |
| 108Cd | 0.89 % | stable | ||
| 109Cd | syn | 462.6 d | ε | 109Ag |
| 110Cd | 12.47 % | stable | ||
| 111Cd | 12.80 % | stable | ||
| 112Cd | 24.11 % | stable | ||
| 113Cd | 12.23 % | 7.7 × 1015 y | β– | 113In |
| 113Cd | syn | 14.1 y | β– IT | 113In 113Cd |
| 114Cd | 28.75 % | stable | ||
| 115Cd | syn | 53.46 h | β– | 115In |
| 116Cd | 7.51 % | 3.1 × 1019 y | β–β– | 116Sn |
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