Below, atomic radius, crystal structure, electronegativity, and the most common valence are tabulated, for several elements; for those that are nonmetals, only atomic radii are indicated. Element Atomic Radius Crystal Structure Electronegativity Valence (nm)
Cu 0.1278 FCC 1.9 +2
C 0.071
H 0.046
O 0.060
Ag 0.1445 FCC 1.9 +1
Al 0.1431 FCC 1.5 +3
Co 0.1253 HCP 1.8 +2
Cr 0.1249 HCP 1.6 +3
Fe 0.1241 HCP 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 Zinc:
(a) A substitutional solid solution having complete solubility
(b) A substitutional solid solution of incomplete solubility
(c) An interstitial solid solution