| 单词 | screening constant |
| 释义 | > as lemmasscreening constant screening constant n. Physics the difference between the atomic number of a nucleus and its effective charge as reduced by screening (sense 1e). ΘΚΠ the world > matter > physics > atomic nucleus > [noun] > number of chemical element > difference from effective charge screening constant1922 1922 London, Edinb., & Dublin Philos. Mag. 6th Ser. 43 1075 The constant a is therefore often termed the ‘screening-constant’ belonging to the level. 1965 C. S. G. Phillips & R. J. P. Williams Inorg. Chem. I. ii. 54 The magnitude of the screening constant indicates the extent to which the full nuclear charge of an element is hidden from the electrons in a particular shell of the core. 2008 J. E. House Inorg. Chem. ii. 51 The screening constant is calculated according to a set of rules that are based on the effectiveness of electrons in shells to screen the electron being considered from the effect of the nucleus. < as lemmas |
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