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一、原子核外电子的排布在原子核外电子排布教学中,经常发现学生虽然学过核外电子排布三原则,即保里(Pauli)不相容原理、能量最低原理和洪特(Hund)规则,但往往不容易解释周期表中约19个元素违反(n+0.7l)经验公式(当然,这仅仅是相当近似的经验规则)所确定的能级次序而排布电子的现象(详见下表)。为研究方便,
1. Arrangement of electrons outside the atomic nuclei In the teaching of electronic arrangement outside the atomic nuclei, students are often found to have learned the three principles of electronic arrangement outside the nuclear, namely Pauli’s principle of incompatibility, the principle of energy minimization, and Hund (Hund). ) Rules, but it is often not easy to explain the phenomenon of the order of the energy levels determined by the empirical formula (about n +0.7l) of the periodic table (which, of course, is only a fairly approximate rule of thumb), is arranged electronically. See the table below). For research convenience,