Make a plot of bonding energy versus melting temperature for the metals listed in Table 2.3. Using this plot, approximate the bonding energy for copper, which has a melting temperature of 1084°C.
Table 2.3 Bonding Energies and Melting Temperatures for Various Substances
|
| Bonding Energy |
| |
Bonding Type | Substance | kJ/mol | eV/Atom, Ion, Molecule | Melting Temperature (°C) |
Ionic | NaCl | 640 | 3.3 | 801 |
| MgO | 1000 | 5.2 | 2800 |
Covalent | Si | 450 | 4.7 | 1410 |
| C (diamond) | 713 | 7.4 | 3550 |
| Hg | 68 | 0.7 | –39 |
| Al | 324 | 3.4 | 660 |
Metallic | Fe | 406 | 4.2 | 1538 |
| W | 849 | 8.8 | 3410 |
van der Waals | Ar | 7.7 | 0.08 | –189 |
| Cl2 | 31 | 0.32 | –101 |
Hydrogen | NH3 | 35 | 0.36 | –78 |
| H2O | 51 | 0.52 | 0 |
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