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Relation between standard entropies of elements and electronic configurations

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Chinese Science Bulletin

Abstract

A close relationship has been found between the standard entropies of elements and their electronic configurations. Based on the positions of elements in the periodic table and the variation in the standard entropies of elements, the standard entropies of elements can be expressed as the sum of two functions:S 0=f(N) +f(E), whereS 0 is the standard entropy of an element,N the principal quantum number, andE the number of outermost electrons. And the specific formula isS 0 = 99.05N 1/3 + [0.32(sp −4)4 -119.76] + [-56.56N 1/3+ 0.70(sd ∼-7)2 −42.12] + [−11.95 × 10−4(df-8)−4 -105.70], wheresp, sd, df are the numbers of the outermost electrons in thesp, sd, df regions of the periodic table, respectively. This formula helps reveal the essence of the standard entropies of elements and deepens our understanding of the thermodynamic characteristics of compounds.

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Authors and Affiliations

  1. Institute of Geology, Chinese Academy of Sciences, 100029, Beijing, China

    Desheng Ai, Rongshu Zeng & Zhengyu Zhang

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  1. Desheng Ai
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  2. Rongshu Zeng
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  3. Zhengyu Zhang
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Ai, D., Zeng, R. & Zhang, Z. Relation between standard entropies of elements and electronic configurations. Chin.Sci.Bull. 44, 270–273 (1999). https://doi.org/10.1007/BF02896291

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  • DOI: https://doi.org/10.1007/BF02896291

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