| Question |
Answer |
| chlorine has a low bpt |
VAN DER WAALS FORCES OR INTERMOLECULAR FORCES ARE WEAK. LITTLE ENERGY NEEDED TO OVERCOME FORCES. |
| IONIC compounds have HIGH mpts |
ELECTROSTATIC FORCES OF ATTRACTION BTW OPPOSITELY CHARGED IONS ARE VERY STRONG. HUGE AMOUNT OF ENERGY TO BREAK BONDS. |
| METALS ARE GOOD ELECTRICAL CONDUCTORS. |
THE VALENCE ELECTRONS OF THE METAL ATOMS ARE DELOCALISED. THESE DELOCALISED ELECTRONS ARE MOBILE AND MOVE FREELY BETWEEN THE POSITIVE METAL IONS. |
| GRAPHITE IS SOFT |
THE VAN DER WAALS FORCES BTW THE LAYERS OF CARBON ATOMS ARE WEAK. THEY CAN SLIDE EASILY OVER ONE ANOTHER. |
| DIAMOND DOES NOT CONDUCT ECITY |
EACH CARBON ATOM USES UP ALL ITS 4 VALENCE ELECTRONS FOR BONDING WITH OTHER CARBON ATOMS. SO NO FREE ELECTRON REMAINING TO CONNDUCT CURRENT. |
Buen Viaje lv.2 ch 8
