Below, atomic radius, crystal structure, electro negativity, and the most common valence are tabulated, for several elements; for those that are nonmetals, only atomic radii are indicated.

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 solidsolution

Atomic Crystal Structure Element Radius (nm) Electro negativity Valence Cu 0.1278 FCC 1.9 +2 C 0.071 0.046 0.060 Ag 0.1445 FCC 1.9 +1 A1 0.1431 FCC 1.5 +3 Co 0.1253 1.8 +2 Cr 0.1249 1.6 +3 Fe 0.1241 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 1.6 +2