The data below were obtained for two unknown crystalline solids

CHEMISTRY · Single correct · A Level · Chemistry · Bonding · Bonding

Problem

The data below were obtained for two unknown crystalline solids.
PropertySolid ASolid B
Melting point (°C)9503 600
Electrical conductivity (solid)nonenone
Electrical conductivity (molten)highnone
Mechanical behaviorbrittleextremely hard
Based on these observations, which classification for Solid A and Solid B, respectively, is most strongly supported? (a) metallic; ionic (b) covalent network; ionic (c) ionic; covalent network (d) molecular; ionic

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