M = Metal / O = Oxide / E = Element / G = Gas / C = Carbonate / CI = Chloride
Calcium
| Isotopes | Chemical form | Natural abundance % |
| 40Ca | C | 96.94 |
| 42Ca | C | 0.647 |
| 43Ca | C | 0.135 |
| 44Ca | C | 2.086 |
| 46Ca | C | 0.004 |
| 48Ca | C | 0.185 |
| Isotopes | Chemical form | Natural abundance % |
| 40Ca | C | 96.94 |
| 42Ca | C | 0.647 |
| 43Ca | C | 0.135 |
| 44Ca | C | 2.086 |
| 46Ca | C | 0.004 |
| 48Ca | C | 0.185 |
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