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Question
Write any three differences between metals and non-metals with respect to their physical properties.
Solution
Metals and Non-metals
| Metals | Non-metals |
| 1. Metals have lustre. | 1. Non-metals have no lustre. Exceptions: Iodine and diamond |
| 2. They are generally good conductors of heat and electricity. | 2. They are bad conductors of heat and electricity. Exception: Graphite |
| 3. They are generally solids at room temperature. Exceptions: Mercury and gallium are liquids. | 3. They are generally gases and solids at room temperature. Exception: Bromine is a liquid. |
| 4. Metals form basic oxides. | 4. Non-metals form acidic or neutral oxides. |
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