(a) HF (b) CH3Cl
A ⇒ good separation between melting and boiling points, relatively high m.p. for molecular, no conductivity - polar-molecular. (HF - polar molecule) B ⇒ close and low melting and boiling points, no condutivity - nonpolar-molecular. (H2 - nonpolar molecule) C ⇒ high mp and bp, good conductor - metallic. (Fe - metal) D ⇒ high melting and boiling points, conducts as a liquid - ionic. (KI - ionic compound) E ⇒ low and close together mp and bp, nonconductor - nonpolar-molecular. (CO2 - nonpolar molecule) F ⇒ low and close together mp and bp, nonconductor - nonpolar-molecular. (CH4 - nonpolar molecule) G ⇒ very high mp and bp, nonconductor - covalent (network). (Diamond - covalent network) HF - polar molecule, good separation between melting and boiling points, relatively high m.p. for molecular, no conductivity - polar-molecular. H2 - nonpolar molecule, close and low melting and boiling points, no condutivity - nonpolar-molecular. Fe - metal, high or low mp and bp, good conductor - metallic. KI - ionic compound, high melting and boiling points, conducts as a liquid - ionic. CO2 - nonpolar molecule, low and close together mp and bp, nonconductor - nonpolar-molecular. CH4 - nonpolar molecule, low and close together mp and bp, nonconductor - nonpolar-molecular. Diamond - covalent network, very high mp and bp, nonconductor - covalent (network)
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