Periodic Table Element Comparison: Compare Elements - Tellurium vs Germanium
Compare Tellurium and Germanium on the basis of their properties, attributes and periodic table facts. Compare elements on more than 90 properties. All the elements of similar categories show a lot of similarities and differences in their chemical, atomic, physical properties and uses. These similarities and dissimilarities should be known while we study periodic table elements. You can study the detailed comparison between Tellurium vs Germanium with most reliable information about their properties, attributes, facts, uses etc. You can compare Te vs Ge on more than 90 properties like electronegativity , oxidation state, atomic shells, orbital structure, Electronaffinity, physical states, electrical conductivity and many more. Tellurium and Germanium comparison table on more than 90 properties.
Tellurium and Germanium Comparison
Facts
| Name | Tellurium | Germanium |
|---|---|---|
| Atomic Number | 52 | 32 |
| Atomic Symbol | Te | Ge |
| Atomic Weight | 127.6 | 72.64 |
| Phase at STP | Solid | Solid |
| Color | Silver | Gray |
| Metallic Classification | Metalloid | Metalloid |
| Group in Periodic Table | group 16 | group 14 |
| Group Name | oxygen family | carbon family |
| Period in Periodic Table | period 5 | period 4 |
| Block in Periodic Table | p -block | p -block |
| Electronic Configuration | [Kr] 4d10 5s2 5p4 | [Ar] 3d10 4s2 4p2 |
| Electronic Shell Structure (Electrons per shell) | 2, 8, 18, 18, 6 | 2, 8, 18, 4 |
| Melting Point | 722.66 K | 1211.4 K |
| Boiling Point | 1261 K | 3093 K |
| CAS Number | CAS13494-80-9 | CAS7440-56-4 |
| Neighborhood Elements | Neighborhood Elements of Tellurium | Neighborhood Elements of Germanium |
History
| Parameter | Tellurium | Germanium |
|---|---|---|
| History | The element Tellurium was discovered by F.-J.M. von Reichenstein in year 1782 in Romania. Tellurium derived its name from Latin tellus, meaning 'earth'. | The element Germanium was discovered by C. A. Winkler in year 1886 in Germany. Germanium derived its name from Germania, the Latin name for Germany. |
| Discovery | F.-J.M. von Reichenstein (1782) | C. A. Winkler (1886) |
| Isolated | H. Klaproth () | () |
Presence: Abundance in Nature and Around Us
Parts per billion (ppb) by weight / by atoms (1ppb =10^-7 %)
| Property | Tellurium | Germanium |
|---|---|---|
| Abundance in Universe | 9 / 0.09 | 200 / 3 |
| Abundance in Sun | - / - | 200 / 3 |
| Abundance in Meteorites | 2100 / 300 | 21000 / 4900 |
| Abundance in Earth's Crust | 1.0 / 0.2 | 1400 / 390 |
| Abundance in Oceans | - / - | 0.06 / 0.0051 |
| Abundance in Humans | - / - | - / - |
Crystal Structure and Atomic Structure
| Property | Tellurium | Germanium |
|---|---|---|
| Atomic Volume | 20.449 cm3/mol | 13.646 cm3/mol |
| Atomic Radius | 123 pm | 125 pm |
| Covalent Radius | 135 pm | 122 pm |
| Van der Waals Radius | 206 pm | 211 pm |
Atomic Spectrum - Spectral Lines | ||
| Emission Spectrum |  |  |
| Absorption Spectrum |  |  |
| Lattice Constant | 445.72, 445.72, 592.9 pm | 565.75, 565.75, 565.75 pm |
| Lattice Angle | π/2, π/2, 2 π/3 | π/2, π/2, π/2 |
| Space Group Name | P3121 | Fm_ 3m |
| Space Group Number | 152 | 225 |
| Crystal Structure | Simple Trigonal  | Face Centered Cubic  |
Atomic and Orbital Properties
| Property | Tellurium | Germanium |
|---|---|---|
| Atomic Number | 52 | 32 |
| Number of Electrons (with no charge) | 52 | 32 |
| Number of Protons | 52 | 32 |
| Mass Number | 127.6 | 72.64 |
| Number of Neutrons | 76 | 41 |
| Shell structure (Electrons per energy level) | 2, 8, 18, 18, 6 | 2, 8, 18, 4 |
| Electron Configuration | [Kr] 4d10 5s2 5p4 | [Ar] 3d10 4s2 4p2 |
| Valence Electrons | 5s2 5p4 | 4s2 4p2 |
| Oxidation State | -2, 2, 4, 6 | -4, 2, 4 |
| Atomic Term Symbol (Quantum Numbers) | 3P2 | 3P0 |
| Shell structure |  |  |
Isotopes and Nuclear Properties
Tellurium has 5 stable naturally occuring isotopes while Germanium has 4 stable naturally occuring isotopes.
| Parameter | Tellurium | Germanium |
|---|---|---|
| Known Isotopes | 105Te, 106Te, 107Te, 108Te, 109Te, 110Te, 111Te, 112Te, 113Te, 114Te, 115Te, 116Te, 117Te, 118Te, 119Te, 120Te, 121Te, 122Te, 123Te, 124Te, 125Te, 126Te, 127Te, 128Te, 129Te, 130Te, 131Te, 132Te, 133Te, 134Te, 135Te, 136Te, 137Te, 138Te, 139Te, 140Te, 141Te, 142Te | 58Ge, 59Ge, 60Ge, 61Ge, 62Ge, 63Ge, 64Ge, 65Ge, 66Ge, 67Ge, 68Ge, 69Ge, 70Ge, 71Ge, 72Ge, 73Ge, 74Ge, 75Ge, 76Ge, 77Ge, 78Ge, 79Ge, 80Ge, 81Ge, 82Ge, 83Ge, 84Ge, 85Ge, 86Ge, 87Ge, 88Ge, 89Ge |
| Stable Isotopes | Naturally occurring stable isotopes: 120Te, 122Te, 124Te, 125Te, 126Te | Naturally occurring stable isotopes: 70Ge, 72Ge, 73Ge, 74Ge |
| Neutron Cross Section | 5.4 | 2.2 |
| Neutron Mass Absorption | 0.0013 | 0.0011 |
Chemical Properties: Ionization Energies and electron affinity
| Property | Tellurium | Germanium |
|---|---|---|
| Valence or Valency | 6 | 4 |
| Electronegativity | 2.1 Pauling Scale | 2.01 Pauling Scale |
| Electron Affinity | 190.2 kJ/mol | 119 kJ/mol |
| Ionization Energies | 1st: 869.3 kJ/mol 2nd: 1790 kJ/mol 3rd: 2698 kJ/mol 4th: 3610 kJ/mol 5th: 5668 kJ/mol 6th: 6820 kJ/mol 7th: 13200 kJ/mol | 1st: 762 kJ/mol 2nd: 1537.5 kJ/mol 3rd: 3302.1 kJ/mol 4th: 4411 kJ/mol 5th: 9020 kJ/mol |
Physical Properties
| Property | Tellurium | Germanium |
|---|---|---|
| Density | 6.24 g/cm3 | 5.323 g/cm3 |
| Molar Volume | 20.449 cm3/mol | 13.646 cm3/mol |
Elastic Properties | ||
| Young Modulus | 43 | - |
| Shear Modulus | 16 GPa | - |
| Bulk Modulus | 65 GPa | - |
| Poisson Ratio | - | - |
Hardness - Tests to Measure of Hardness of Element | ||
| Mohs Hardness | 2.25 MPa | 6 MPa |
| Vickers Hardness | - | - |
| Brinell Hardness | 180 MPa | - |
Electrical Properties | ||
| Electrical Conductivity | 10000 S/m | 2000 S/m |
| Resistivity | 0.0001 m Ω | 0.0005 m Ω |
| Superconducting Point | - | - |
Heat and Conduction Properties | ||
| Thermal Conductivity | 3 W/(m K) | 60 W/(m K) |
| Thermal Expansion | - | 0.000006 /K |
Magnetic Properties | ||
| Magnetic Type | Diamagnetic | Diamagnetic |
| Curie Point | - | - |
| Mass Magnetic Susceptibility | -3.9e-9 m3/kg | -1.5e-9 m3/kg |
| Molar Magnetic Susceptibility | -4.98e-10 m3/mol | -1.09e-10 m3/mol |
| Volume Magnetic Susceptibility | -0.0000243 | -0.00000798 |
Optical Properties | ||
| Refractive Index | 1.000991 | - |
Acoustic Properties | ||
| Speed of Sound | 2610 m/s | 5400 m/s |
Thermal Properties - Enthalpies and thermodynamics
| Property | Tellurium | Germanium |
|---|---|---|
| Melting Point | 722.66 K | 1211.4 K |
| Boiling Point | 1261 K | 3093 K |
| Critical Temperature | - | - |
| Superconducting Point | - | - |
Enthalpies | ||
| Heat of Fusion | 17.5 kJ/mol | 31.8 kJ/mol |
| Heat of Vaporization | 48 kJ/mol | 334 kJ/mol |
| Heat of Combustion | - | -536 J/(kg K) |
Regulatory and Health - Health and Safety Parameters and Guidelines
| Parameter | Tellurium | Germanium |
|---|---|---|
| CAS Number | CAS13494-80-9 | CAS7440-56-4 |
| RTECS Number | RTECSWY2625000 | RTECSLY5200000 |
| DOT Hazard Class | 6.1 | 4.1 |
| DOT Numbers | 2811 | 3089 |
| EU Number | - | - |
| NFPA Fire Rating | 0 | 0 |
| NFPA Health Rating | 2 | 1 |
| NFPA Reactivity Rating | 0 | 0 |
| NFPA Hazards | - | - |
| AutoIgnition Point | 340 °C | - |
| Flashpoint | - | - |
Compare With Other Elements
Compare Tellurium and Germanium with other elements of the periodic table.