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BTmetals
 .actinides
NTactinium
 americium
 berkelium
 californium
 curium
 einsteinium
 fermium
 lawrencium
 mendelevium
 neptunium
 nobelium
 plutonium
 protactinium
 thorium
 uranium
SNSeries of heavy, radioactive, metallic elements with atomic numbers 89 to 103.