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Strontium(Sr)
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| Atomic weight | 87.62 |
| Atomic volume | 33.7 (cm3/mol) |
| discovered | 11/30/1807 |
| state (s, l, g) | s |
| melting point | 1,042.2 (K) |
| boiling point | 1,654 (K) |
| electronegativity | .95 |
| Shells | 2,8,18,8,2 |
| electron configuration | [Kr] 5s2 |
| structure | hcp: hexagonal close pkd |
| uses | fireworks (red flame) |
| hardness | 1.8 (mohs) |
| characteristics | tarnishes |
| reaction with air | vigorous, =>SrO, Sr2N3 |
| number of isotopes | 4 |
| hydride(s) | SrH2 |
| oxide(s) | SrO |
| chloride(s) | SrCl2 |
| image |  |
| thermal conductivity | 35.4 J/m-sec-deg |
| electrical conductivity | 43.478 1/mohm-cm |
| polarizability | 27.6 (A^3) |
| source | Celestite (sulfide) |
| abundance earth's crust | 2.6 (log) |
| cost, pure | 100 $/100g |
| cost, bulk | $/100g |
| rel. abund. solar system | 1 (1) |
| Density @ 293 K | 2 (2) |
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