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Noun: atomic number 89
- A radioactive element of the actinide series; found in uranium ores
- actinium, Ac
Type of: chemical element, element
Part of: uranium ore
Nearest
atomic number 8
atomic number 80
atomic number 81
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atomic number 83
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atomic number 88
atomic number 89
atomic number 9
atomic number 90
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atomic number 98
atomic number 80
atomic number 81
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atomic number 83
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atomic number 86
atomic number 87
atomic number 88
atomic number 89
atomic number 9
atomic number 90
atomic number 91
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atomic number 95
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atomic number 98