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Lawrencium-260 [lah-REN-see-um two sixty] undergoe...
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Lawrencium-260 [lah-REN-see-um two sixty] undergoes alpha decay with a half-life of 2.7 minutes. What is the mass number of the product atom?
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[问答题] What isotope has nuclei [NEW-klee-eye] that contain six protons and seven neutrons?
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