Difference between revisions of "Beryllium"
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<!-- Generated by a gamma candidate version of Autostub2 (Test 9) --> | <!-- Generated by a gamma candidate version of Autostub2 (Test 9) --> | ||
Revision as of 04:37, 21 October 2008
| Beryllium | |
|---|---|
| Be | |
| In situ availability: | |
| Necessity: | |
| Atomic number: | 4 |
| Atomic mass: | 9.012182 |
| group: | 2 |
| period: | 2 |
| normal phase: | Solid |
| series: | Alkaline earth metals |
| density: | 0.1786 g/L |
| melting point: | 1560K, 1287°C, 2349°F |
| boiling point: | 2742K, 2469°C, 4476°F |
| H ← N/A → N/A | |
| Li ← Be → B | |
| Na ← Mg → N/A | |
| Atomic radius (pm): | 105 |
| Bohr radius (pm): | 112 |
| Covalent radius (pm): | 90 |
| Van der Waals radius (pm): | |
| ionic radius (pm): | (+2) 45 |
| 1st ion potential (eV): | 9.32 |
| Electron Configuration | |
| 1s2 2s2 | |
| Electrons Per Shell | |
| 2, 2 | |
| Electronegativity: | 1.57 |
| Electron Affinity: | Unstable anion |
| Oxidation states: | 2 |
| Magnetism: | Diamagnetic |
| Crystal structure: | Hexagonal |
Beryllium is a Alkaline earth metal in group 2.
It has a Hexagonal crystalline structure.
This element has a stable isotope of 9
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