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| 1. |
Carbon dioxide is a gas but silica is a solid because:A. `CO_(2)` molecules are lighter than `SiO_(2)` moleculesB. carbon dioxide is composed of descreate covalent `CO_(2)` molecules whereas silica has continuous tetrahedral structureC. `CO_(2)` is more acidic than `SiO_(2)`D. melting point of silica is very high |
| Answer» Correct Answer - B | |