论文部分内容阅读
中学教材中“物质结构 元素周期律”一章是重要的化学理论内容,每年的高考均有考查,今年各地的高考更是如此. 一、考查原子结构--同位素及各种构成微粒之间数量关系 例1 (江苏省化学卷-1)我国的“神舟五号”载人飞船已发射成功,“嫦娥”探月工程也已正式启动.据科学家预测,月球的土壤中吸附着数百万吨的23He,每百吨23He核聚变所释放的能量相当于目前人类一年消耗的能量.在地球上,氦元素主要以24He的形式存在.下列说法正确的是( )
The chapter “Cycles of the structural elements of the material structure” in middle school textbooks is an important content of chemistry theory. The annual college entrance examinations are examined, and this year’s college entrance examinations are even more so. I. Examination of atomic structures—isotopes and various constituent particles Case Study 1 (Jiangsu Province Chemical Vol.-1) China’s Shenzhou 5 manned spacecraft has been successfully launched, and the “嫦娥” moon exploration project has also been officially launched. According to scientists’ predictions, the moon’s soil Adsorption of millions of tons of 23He, 23 He nuclear fusion per hundred tons of energy released by the equivalent of the energy consumed by humans in a year. In the earth, germanium elements mainly in the form of 24He. The following statement is correct ()