本题目来源于试卷: Quantum Mechanics of Atoms，类别为 IB物理学
[问答题]
The size of atoms varies by only a factor o7niz b)/ixg:( d-kbq9zht r* uf2o) 2r3k9d acboexjx9 three or so, from largest to smallest, yet the number x9b )d3r 2xa coo9jk2eof electrons varies from one to over 100. Explain.
参考答案:
As the number of electrons goes up, so does the number of protons in the nucleus, which increases the attraction of the electrons to the center of the atom. Even though the outer electrons are partially screened by the inner electrons, they are all pulled closer to the very positive nuclei of the large Z atoms when compared to the low Z atoms. This keeps the atom from expanding in a “linear” fashion as larger numbers of electrons are added to the large Z atoms.
本题详细解析:
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