certain solid has a melting point of 42.0ºC. It is a nonconductor of both heat and electricity...?
A certain solid has a melting point of 42.0ºC. It is a nonconductor of both heat and electricity and it is insoluble in water. Such a substance is most likely a _____ solid.
a) metallic
b) molecular
c) covalent network
d) ionic
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b) molecular solid -- because molecules are held by relatively weak intermolecular forces, like London forces and dipole-dipole forces.