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第一节原子结构一、选择题1.科学家最近制造了112号新元素,其原子的质量数是277,它是迄今为止已知的元素中最重的原子.关于该新元素的下列叙述正确
Section 1. Atomic Structure 1. Multiple-choice Questions 1. Scientists have recently created a new element No. 112 whose atom mass number is 277, which is the heaviest atom of the element known so far. The following description of the new element is correct.