Atomic Radius Crystal Electro- Element (nm) Structure negativity Valence Cu 0.1278 FCC 1.9 +2 C 0.071 H 0.046 0.060 Ag 0.1445 FCC 1.9 +1 Al 0.1431 FCC 1.5 +3 13 Co 0.1253 HCP 1.8 +2 Cr 0.1249 BCC 1.6 +3 Fe 0.1241 BCC 1.8 +2 32 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: