A materials scientist needs a copper-based alloy that is at least as electrically…
CHEMISTRY · Single correct · AP · Chemistry · Compound Structure and Properties · Compound Structure and Properties
Problem
A materials scientist needs a copper-based alloy that is at least as electrically conductive as pure copper but significantly less malleable for use in structural wiring. The properties of four potential alloying elements are shown.
Element | Atomic radius (pm) | Typical location in Cu lattice
Carbon | 70 | interstitial
Zinc | 135 | substitutional
Silver | 144 | substitutional
Lead | 180 | substitutional
Which element, added in a small concentration to copper, best satisfies the design criteria?
(a) Zinc
(b) Carbon
(c) Silver
(d) Lead