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Berkelium

A man-made radioactive actinide with atomic symbol Bk, atomic number 97, and atomic weight 247. Its valence can be +3 or +4. Twelve isotopes have been produced with mass numbers 240-251.
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副标题
树号: D01.268.271.100.100, D01.268.556.075, D01.496.749.305.100.100, D01.552.020.150, D01.552.544.075
MeSH 单一 ID: D001603

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