|
The row of the periodic table which contains hydrogen and helium has only two elements, while the next row has eight. Why is that so?
元素周期表中包含氢和氦的那一行只有两个元素，而下一行有八个。为什么会出现这种情况？
What fundamental property determines the element to which a particular atom belongs?
决定一个原子属于哪种元素的 fundamental property 是什么？
What quantum numbers are necessary to build up the periodic table?
构建元素周期表需要哪些量子数？ Which of the quantum numbers has the most influence on the row of the periodic table in which an element belongs?
Describe the role of the Pauli exclusion principle in the buildup of the periodic table.
描述泡利不相容原理在元素周期表形成中的作用。
哪一个量子数对元素在元素周期表中的行（周期）影响最大？ |