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首页> 外文期刊>Zeitschrift fur Naturforschung, B. A Journal of Chemical Sciences >Metallic radii, ionic radii, and valences of solid metallic elements [German]
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Metallic radii, ionic radii, and valences of solid metallic elements [German]

机译：金属半径，离子半径和固体金属元素的化合价[德语]

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摘要

Metallic radii r(m) are correlated with the ionic radii r(i) by linear relationships. For groups 1 up to 7 as well as for Al, Ga, In, TI, Sn, and Pb the ionic radii refer to the maximum valences (oxidation states) as known from compounds according to r(m) approximate to 1.16 . (r(i) + 0.64) [Angstrom]. For groups 8 up to 12, r(m) approximate to 0.48 . (r(i) + 2.26) [Angstrom] with valences W = 14 - G (G = group number). These valences are considered regular (W-r). For groups 1 up to 12, they obey the equation W, = 7 - G - 7. According to this equation all outer s electrons and the unpaired d electrons should be involved in chemical bonding, i.e. in the cohesion of the element in the solid state. From the melting temperatures and the atomic volumes it is concluded, however, that only 19 out of the 30 d-block elements have regular valences, namely the elements of groups 3, 5, 6, 10, 11 as well as Os, Ir, Zn, Cd, and possibly Ru. All of the non-regular Valences are lower than the regular ones. Four of them are integers: Mn 3; Fe, Co 4; Re 6. [References: 16]
机译：金属半径r（m）通过线性关系与离子半径r（i）相关。对于1至7族以及Al，Ga，In，TI，Sn和Pb，离子半径是指根据r（m）从化合物中获悉的最大化合价（氧化态），其近似为1.16。 （r（i）+ 0.64）[埃]。对于直到12的第8组，r（m）近似为0.48。 （r（i）+ 2.26）[价] [价] W = 14-G（G =组号）。这些化合价被认为是常规价（W-r）。对于1到12组，它们服从方程W，= 7- G-7 。根据该方程式，所有外S电子和未成对的D电子都应参与化学键合，即参与固态元素的内聚。然而，从熔化温度和原子量得出的结论是，在30个d嵌段元素中，只有19个具有规则化合价，即第3、5、6、10、11组的元素以及Os，Ir，锌，镉和可能的钌。所有非常规价均低于常规价。其中四个是整数：Mn 3; Fe，Co 4;关于6. [参考：16]

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