一、选择题《每小题只有1个选项符合题意）1.某元素的原子最外层有两个电子,该元素是（）。（A）11A族元素旧）金属元素忆）稀有气体元素山）无法确定属于哪一类2IN3年的十大科技成果新闻宣称.中国学者许志福和美国科学家穆尔共同合成了世界上最大的碳氢分子,其中回个分子由113 First, the multiple-choice questions “There is only one option for each question that corresponds to the meaning of the question.” 1. The atomic outermost layer of an element has two electrons. The element is (). (A) 11A elements old) metal elements recall) rare gas element mountain) can not be determined which category 2 IN3 years of top ten scientific and technological achievements News declared. Chinese scholar Xu Zhifu and American scientist Moore have jointly synthesized the world’s largest hydrocarbon The molecule, which is back molecule 113