A solid labeled Sample Q conducts electricity in the solid state
CHEMISTRY · Single correct · A Level · Chemistry · Bonding · Bonding
Problem
A solid labeled Sample Q conducts electricity in the solid state, is malleable, and melts at 145 °C. Which classification most consistently accounts for this combination of properties?
(a) Sample Q is an ionic solid made of small, highly charged ions whose presumed mobility accounts for the observed conductivity and malleability.
(b) Sample Q is a molecular solid held together by strong hydrogen bonds; these directional interactions supposedly allow both moderate melting and electron mobility.
(c) Sample Q is a metallic solid in which relatively weak metallic bonds allow melting at a moderate temperature while delocalized electrons provide conductivity and malleability.
(d) Sample Q is a covalent-network solid consisting of stacked two-dimensional layers (like graphite) that can slide past one another and carry charge through delocalized π-electrons.