Zinc (Zn) is a chemical element of the periodic table, located in the group 12 and the period 4, and is having the atomic number 30. It is a slightly brittle, silvery-white post transition metal, whose name comes from the German word “zinke”, which means prong or tooth. It is the 24th most abundant element on earth.
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| – d block |
FAQs on Zinc Element
| Zinc |
|---|
| ‣ What does zinc look like? Appearance: silvery grey |
| ‣ Who discovered zinc? When was zinc discovered? Discovery: Indian Metallurgists (before 1000 BCE) First isolation: Andreas Sigismund Marggraf (1746) Recognized as a unique metal by: Rasaratna Samuccaya (1300) |
‣ Where is zinc found on the periodic table? Location: Zinc is found in the fourth row of the periodic table, next to the copper element. |
| ‣ What is zinc atomic number? Atomic number (Z): 30 |
| ‣ What is the chemical symbol for zinc? Symbol: Zn |
| ‣ What is the atomic weight of zinc? Standard atomic weight: 65.38 |
| ‣ What block is zinc in the periodic table? Block: d-block |
| ‣ What group is zinc in on the periodic table? Group: 12 |
| ‣ What period is zinc in on the periodic table? Period: 4 |
| ‣ What is the atomic radius of zinc? Atomic radius: empirical: 134 pm |
| ‣ Zinc covalent radius: 122±4 pm |
| ‣ Zinc Van der Waals radius: 139 pm |
| ‣ What is zinc’s melting point? Melting point: 692.68 K (419.53 °C, 787.15 °F) |
| ‣ What is the boiling point of zinc? Boiling point: 1180 K (907 °C, 1665 °F) |
| ‣ How many electron shells does zinc have? Electrons per shell: 2, 8, 18, 2 |
| ‣ What is zinc electron configuration? Electron configuration: [Ar] 3d10 4s2 |
| ‣ What is the ionization energy of zinc? Ionization energies: 1st: 906.4 kJ/mol 2nd: 1733.3 kJ/mol 3rd: 3833 kJ/mol |
| ‣ What is the phase of zinc? Phase (at r.t): solid |
| ‣ What is the density of zinc in g/cm3? Density (near r.t): 7.14 g/cm3 when liquid (at m.p): 6.57 g/cm3 |
| ‣ Zinc magnetic ordering: diamagnetic |
| ‣ Zinc natural occurrence: primordial |
| ‣ What is the oxidation state of zinc? Oxidation state: +2 |
| ‣ What is the electronegativity of zinc? Electronegativity: Pauling scale: 1.65 |
| ‣ Zinc poisson’s ratio: 0.25 |
| ‣ Zinc heat of fusion: 7.32 kJ/mol |
| ‣ Zinc heat of vaporization: 115 kJ/mol |
| ‣ Zinc molar heat capacity: 25.470 J/(mol K) |
| ‣ Zinc molar magnetic susceptibility: -11.4 × 10-6 cm3/mol (298 K) |
| ‣ Speed of sound in zinc: 3850 m/s (at r.t) (rolled) |
| ‣ What is the crystal structure of zinc? Crystal structure: hexagonal close-packed (hcp) |
| ‣ Thermal expansion of zinc: 30.2 µm/(m.K) (at 25 °C) |
| ‣ Thermal conductivity of zinc: 116 W/(m.K) |
| ‣ Zinc electrical resistivity: 59.0 nΩ.m (at 20 °C) |
| ‣ What is zinc’s hardness? Mohs hardness: 2.5 Brinell hardness: 327-412 MPa |
| ‣ Young’s modulus of zinc: 108 GPa |
| ‣ Shear modulus of zinc: 43 GPa |
| ‣ Bulk modulus of zinc: 70 GPa |
| ‣ Zinc CAS number: 7440-66-6 |
‣ Zinc vapor pressure
| Vapor pressure | ||||||
|---|---|---|---|---|---|---|
| P (Pa) | 1 | 10 | 100 | 1 k | 10 k | 100 k |
| at T (K) | 610 | 670 | 750 | 852 | 990 | 1179 |
‣ How many isotopes does zinc have?
| Main isotopes of zinc | ||||
|---|---|---|---|---|
| Isotope | Abundance | Half-life (t1/2) | Decay mode | Product |
| 64Zn | 49.2 % | stable | ||
| 65Zn | syn | 244 d | ε γ | 65Cu – |
| 66Zn | 27.7 % | stable | ||
| 67Zn | 4.0 % | stable | ||
| 68Zn | 18.5 % | stable | ||
| 69Zn | syn | 56 min | β– | 69Ga |
| 69Zn | syn | 13.8 h | β– | 69Ga |
| 70Zn | 0.6 % | stable | ||
| 71Zn | syn | 24 min | β– | 71Ga |
| 71Zn | syn | 4 d | β– | 71Ga |
| 72Zn | syn | 46.5 h | β– | 72Ga |
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