JEE Main levelSingle correct optionDifficulty 2 of 3ss023
Among Cu, KCl, SiC and solid argon, the solid with the highest melting point is
ASolid Ar
BKCl
CSiC
DCu
Answer: C
SiC is a covalent network solid; melting requires breaking strong covalent bonds throughout the lattice (about 2700 C). Copper (1085 C) and KCl (770 C) melt lower, and argon, held by weak London forces, melts at about −189 C.