论文部分内容阅读
“等电子体”知识是历年高考的一个热点,但平时学习中学生们对此知识点颇为害怕,做此类题往往得分不高,现对“等电子体”相关知识谈谈我个人的看法。(2005年理综全国卷,第27题)甲、乙、丙、丁为前三周期元素形成的微粒,它们的电子总数相等,已知甲乙丙为双原子分子或负二价双原子阴离子,丁为原子。
“Electronic body” knowledge is a hot spot in the college entrance examination over the years, but in the middle of the study, middle school students are very afraid of this knowledge, and they often do not have high scores for such questions. Now they are talking about “isoelectronics” related knowledge. My personal opinion. (2005 National Institute of Physical Education, Vol.27, Item 27) A, B, C, and D are microparticles formed by the elements of the first three cycles. Their total number of electrons is equal. It is known that alpha, beta, or diatomic diatomic anions. Ding is an atom.