Atomic radius, crystal structure, electronegativity, and the most common valence are given in the following table for several elements; for those that are nonmetals, only atomic radii are indicated.
Element | Atomic Radius (nm) | Crystal Structure | Electronegativity | Valence |
Cu | 0.1278 | FCC | 1.9 | +2 |
C | 0.071 |
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H | 0.046 |
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O | 0.060 |
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Ag | 0.1445 | FCC | 1.9 | +1 |
Al | 0.1431 | FCC | 1.5 | +3 |
Co | 0.1253 | HCP | 1.8 | +2 |
Cr | 0.1249 | BCC | 1.6 | +3 |
Fe | 0.1241 | BCC | 1.8 | +2 |
Ni | 0.1246 | FCC | 1.8 | +2 |
Pd | 0.1376 | FCC | 2.2 | +2 |
Pt | 0.1387 | FCC | 2.2 | +2 |
Zn | 0.1332 | HCP | 1.6 | +2 |
Which of these elements would you expect to form the following with copper?
(a) A substitutional solid solution having complete solubility
(b) A substitutional solid solution of incomplete solubility
(c) An interstitial solid solution
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