Question

directions: sort the following properties of molecular (covalent), ionic, and metallic compounds:
phrases to sort:
form crystals with repeating patterns
good conductor of electricity
high luster
higher melting and boiling points
lower melting and boiling points
malleable and ductile
poor conductor of electricity
sea of electrons

Explanation:

• Ionic compounds: They form crystals with repeating patterns (due to the regular arrangement of ions) and have higher melting and boiling points (strong ionic bonds require more energy to break).
• Molecular (covalent) compounds: Have lower melting and boiling points (weak intermolecular forces) and are poor conductors of electricity (no free - moving charged particles in most cases).
• Metallic compounds: Are good conductors of electricity (free - moving electrons), have high luster (interaction of light with free electrons), are malleable and ductile (layers of metal atoms can slide over each other without breaking the metallic bond), and have a sea of electrons (delocalized electrons in the metallic structure).

Answer:

IONIC COMPOUNDS	MOLECULAR COMPOUNDS (COVALENT)	METALLIC COMPOUNDS