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Compare the properties of metals and non-metals in terms of sonority, high melting and boiling point, lustrous, reaction with dilute acid, hardness, state. Also write the exceptional cases.
| Property | Metals | Non-metals |
| Sonority | Metals are generally sonorous. Exception: Sodium, Potassium | Non-metals are generally non-sonorous. Exception: Graphite |
| High melting and Boiling point | Metals have high melting and boiling points. Exception: Silver has low boiling point. sodium and potassium has low melting point. | Non metals have low melting and boiling points. |
| Lustrous | Metals are lustrous. Exception: Lead | Non metals are non-lustrous. Exception: Iodine |
| Reaction with dilute acids | Metals generally react with the dilute acid to produce hydrogen gas. | Non metals react with dilute acids to produce hydrogen gas which burns with a 'pop' sound. |
| Hardness | Metals are generally hard solids Exception: Sodium and Potassium | Non metals are generally soft. Exception: Graphite is hard solid. |
| State | Metals are generally hard solids. Exception: Mercury is liquid metal. | Non metals are generally gases. Exception: Graphite is solid. |
Updated on: 10-Oct-2022
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