| NOM | substance | número atòmic 89, Ac, actini | a radioactive element of the actinide series |
|---|
| Sentit | A radioactive element of the actinide series; found in uranium ores. | |
|---|---|---|
| Sinònims | Ac, actini | |
| General | element, element químic | Any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter |
| Anglès | actinium, Ac, atomic number 89 | |
| Espanyol | actinio, número atómico 89 | |
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