Equal amounts of copper (atomic radius 128 pm) and nickel (125 pm) are melted…
CHEMISTRY · Single correct · AP · Chemistry · Compound Structure and Properties · Compound Structure and Properties
Problem
Equal amounts of copper (atomic radius 128 pm) and nickel (125 pm) are melted together and allowed to solidify. Which type of alloy is most likely produced, and why?
(a) An interstitial alloy, because the nickel atoms are significantly smaller than the copper atoms.
(b) A substitutional alloy, because their atomic radii differ by less than about 15%.
(c) A substitutional alloy, because the two metals have nearly identical electronegativities.
(d) An interstitial alloy, because their atomic radii differ by less than about 15%.