论文部分内容阅读
一、“原子结构与性质”知识1.各能层的能级数任一能层的能级总是从s能级开始,而且能级数等于该能层序数。第一能层只有1个能级(1s),第二能层有2个能级(2s和2p),第三能层有3个能级(3s、3p和3d),依次类推。2.对电子云概念的理解(1)用小黑点的疏密程度来表示电子在原子核外出现概率的大小;核外电子的概率密度分布看起来像一片云雾,因而被形象地称作电子云。(2)在电子云图中,小黑点越密,表明电子在原子核外出现的概率越大,但并不表示核外电子
First, “atomic structure and nature ” knowledge 1. Energy levels of each energy level Energy levels of any energy level always start from the s level, and energy levels equal to the energy level ordinal number. The first energy level has only one energy level (1s), the second energy level has 2 energy levels (2s and 2p), the third energy level has 3 energy levels (3s, 3p and 3d), and so on. 2. Understanding of the concept of electronic cloud (1) The degree of density of small black dots to indicate the probability of appearance of electrons in the nucleus; the distribution of the probability density of extranuclear electrons looks like a cloud, and thus is vividly called electronic cloud. (2) In the electron cloud image, the smaller black spots are denser, indicating that the greater the probability of the electrons appearing outside the nucleus, but it does not mean that the electrons outside the nucleus