Diamond | Graphite |
1. In diamond each carbon atom is linked to four other carbon atoms to form a three dimensional structure. 2. Diamond is the hardest of all known crystalline substance. 3. It is transparent and shines brilliantly in light. 4. Diamond does not have free electrons hence it is a bad conductor of electricity. | 1. In graphite, each carbon atom is linked to three other carbon atoms forming a hexagonal structure. 2. Graphite is a soft, slippery and smooth substance. 3. It is opaque and has a slight metallic sheen. 4. Graphite does have free electrons hence it is good conductor of electricity. |