Difference between revisions of "Nitrogen"
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This element has two stable isotopes: 14 and 15. | This element has two stable isotopes: 14 and 15. | ||
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| − | + | "Nitrogen (N) is an essential element of life and a part of all plant and animal proteins. Nitrogen can be produced in several ways. Some plants, such as soybeans and other legumes, recover nitrogen directly from the atmosphere or from the soil in a process know as "fixation," whereby the plant converts nitrogen into carbohydrates, essential amino acids, and proteins. Nitrogen is commercially recovered from the air as ammonia, which is produced by combining nitrogen in the atmosphere with hydrogen from natural gas. Ammonia is converted to other nitrogen compounds, the most important of which are urea (NH<sub>2</sub>CONH<sub>2</sub>), nitric acid (HNO<sub>3</sub>), ammonium nitrate (NH<sub>4</sub>NO<sub>3</sub>), and ammonium sulfate [(NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub>]. With the exception of nitric acid, these compounds are widely used as fertilizer." - USGS Nitrogen Statistics and Information[http://minerals.usgs.gov/minerals/pubs/commodity/nitrogen/] | |
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Revision as of 13:46, 13 February 2007
| Nitrogen | |
|---|---|
| N | |
| In situ availability: | |
| Necessity: | |
| Atomic number: | 7 |
| Atomic mass: | 14.00674 |
| group: | 15 |
| period: | 2 |
| normal phase: | Gas |
| series: | Non-metals |
| density: | 1.251 g/L |
| melting point: | 63.15K, -210.00°C, -346.00°F |
| boiling point: | 77.36K, -195.79°C, -320.42°F |
| N/A ← N/A → N/A | |
| C ← N → O | |
| Si ← P → S | |
| Atomic radius (pm): | 65 |
| Bohr radius (pm): | 56 |
| Covalent radius (pm): | 75 |
| Van der Waals radius (pm): | 155 |
| ionic radius (pm): | (+3) 16 |
| 1st ion potential (eV): | 14.53 |
| Electron Configuration | |
| 1s2 2s2 2p3 | |
| Electrons Per Shell | |
| 2, 5 | |
| Electronegativity: | 3.04 |
| Electron Affinity: | Unstable anion |
| Oxidation states: | +/-3, 5, 4, 2 |
| Magnetism: | |
| Crystal structure: | Hexagonal |
Nitrogen is a Non-metal in group 15.
It has a Hexagonal crystalline structure.
This element has two stable isotopes: 14 and 15.
"Nitrogen (N) is an essential element of life and a part of all plant and animal proteins. Nitrogen can be produced in several ways. Some plants, such as soybeans and other legumes, recover nitrogen directly from the atmosphere or from the soil in a process know as "fixation," whereby the plant converts nitrogen into carbohydrates, essential amino acids, and proteins. Nitrogen is commercially recovered from the air as ammonia, which is produced by combining nitrogen in the atmosphere with hydrogen from natural gas. Ammonia is converted to other nitrogen compounds, the most important of which are urea (NH2CONH2), nitric acid (HNO3), ammonium nitrate (NH4NO3), and ammonium sulfate [(NH4)2SO4]. With the exception of nitric acid, these compounds are widely used as fertilizer." - USGS Nitrogen Statistics and Information[1]
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