List of alkaline earth halides
Alkaline earth halides are the salts of each of the six alkaline earth metals with each of the four hydrohalic acids . All alkaline earth halides are colorless crystalline solids .
The columns can be sorted - except for the formula - whereby the names and the anions are not sorted alphabetically but according to the ordinal numbers :
- Names: First by cations , then by anions (this is also the initial sort);
- Anions: first by anions, then by cations.
| Surname |
formula | Anion |
Molar mass [g · mol −1 ] |
Melting point [° C] |
Density [g · cm −3 ] |
Solubility in water [g · 100 ml −1 at (° C)] |
Crystal structure type |
|---|---|---|---|---|---|---|---|
| Beryllium fluoride | BeF 2 | F. | 47.01 | 552 | 2.1 | - | α-quartz ( P 3 1 21 (No. 152) ) |
| Beryllium chloride | BeCl 2 | Cl | 79.92 | 415 | 1.90 | 71.5 (25) | SiS 2 ( Ibam (No. 72) ) |
| Beryllium bromide | BeBr 2 | Br | 168.82 | 508 | 3.47 | - | SiS 2 ( Ibam (No. 72) ) |
| Beryllium iodide | At 2 | I. | 262.82 | 480 | 4.32 | - | SiS 2 ( Ibam (No. 72) ) |
| Magnesium fluoride | MgF 2 | F. | 62.30 | 1263 | 3.15 | 0.013 (25) | Rutile ( P 4 2 / mnm (No. 136) ) |
| Magnesium chloride | MgCl 2 | Cl | 95.21 | 714 | 2.33 | 56.0 (25) | CdCl 2 ( R 3 m (No. 166) ) |
| Magnesium bromide | MgBr 2 | Br | 184.11 | 711 | 3.72 | 102 (25) | CdI 2 ( P 6 3 mc (No. 186) ) |
| Magnesium iodide | MgI 2 | I. | 278.11 | 634 | 4.43 | 146 (25) | CdI 2 ( P 6 3 mc (No. 186) ) |
| Calcium fluoride | CaF 2 | F. | 78.08 | 1418 | 3.18 | 0.0016 (25) | Fluorite ( Fm 3 m (No. 225) ) |
| Calcium chloride | CaCl 2 | Cl | 110.98 | 775 | 2.15 | 81.3 (25) | distorted rutile ( Pnnm (No. 58) ) |
| Calcium bromide | CaBr 2 | Br | 199.89 | 742 | 3.38 | 156 (25) | distorted rutile ( Pnnm (No. 58) ) |
| Calcium iodide | CaI 2 | I. | 293.89 | 783 | 3.96 | 215 (25) | CdI 2 ( P 6 3 mc (No. 186) ) |
| Strontium fluoride | SrF 2 | F. | 125.62 | 1477 | 4.24 | 0.021 (25) | Fluorite ( Fm 3 m (No. 225) ) |
| Strontium chloride | SrCl 2 | Cl | 158.53 | 874 | 3.05 | 54.7 (25) | Fluorite ( Fm 3 m (No. 225) ) |
| Strontium bromide | SrBr 2 | Br | 247.43 | 657 | 4.22 | 107 (25) | PbCl 2 ( Pnma (No. 62) ) |
| Strontium iodide | SrI 2 | I. | 341.43 | 538 | 4.55 | 177 (25) | SrI 2 ( Pnma (No. 62) ) |
| Barium fluoride | BaF 2 | F. | 175.34 | 1368 | 4.89 | 0.161 (25) | Fluorite ( Fm 3 m (No. 225) ) |
| Barium chloride | BaCl 2 | Cl | 208.23 | 961 | 3.9 | 37.0 (25) | PbCl 2 ( Pnma (No. 62) ) |
| Barium bromide | BaBr 2 | Br | 297.14 | 857 | 4.78 | 100 (25) | PbCl 2 ( Pnma (No. 62) ) |
| Barium iodide | BaI 2 | I. | 391.14 | 711 | 5.15 | 221 (25) | PbCl 2 ( Pnma (No. 62) ) |
| Radium fluoride | RaF 2 | F. | 264.01 | ||||
| Radium chloride | RaCl 2 | Cl | 296.93 | 900 | 4.9 | 245 (20) | |
| Radium bromide | RaBr 2 | Br | 385.83 | 728 | 5.78 | 706 (20) | PbCl 2 ( Pnma (No. 62) ) |
| Radium iodide | RaI 2 | I. | 479.83 |
Individual evidence
- ↑ David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Properties of the Elements and Inorganic Compounds, pp. 4-49 / 50, 51, 54/55, 73, 92.