| Element Name | : Nitrogen |  |
| Symbol | : N |
| Presence in: |
| 1. 70 kg Person | : 1.8 kg |
| 2. Body | : 3 % |
| 3. Earth Crust | : 0.002 % |
| 4. Earth Ocean | : 0.00005 % |
| 5. Universe | : 0.1 % |
| Properties: |
| 1. Atomic Number | : 7 |
| 2. Atomic Weight | : 14.0067 |
| 3. Group | : 15 |
| 4. Period | : 2 |
| 5. Block | : p |
| 6. Density | : 1.251 g/l |
| 7. Melting Point | : 63.15 K |
| 8. Boiling Point | : 77.36 K |
| 9. Electron Form | : 1s2 2s2 2p3 |
| 10. State of matter | : Gas |
| 11. Color | : Colorless, odorless, tasteless gas |
| Other Facts: |
| 1. Area of Presence in Body | : In All Liquids, Tissues, Proteins |
| 2. Existence in type of Foods | : Protein, Milk, Fish and Chicken |
| 3. Diseases | : Hypoxia |
| 4. Health Uses | : DNA, proteins |
| 5. Adult consumption / day | : Woman - 40 grams, Men - 55 to 70 grams |
| 6. Children consumption / day | : Nil |
| 7. Natural Form | : Nitrates and nitrites |
| 8. Other Forms | : Nil |
| 9. Source Place | : Air |
| 10. Common Uses | : Light bulbs may contain nitrogen as it is a cheaper alternative to
argon. It is used in the manufacture of stainless steel. It also reduces
the fire hazard in military aircraft fuel systems. |
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