V2EX subshell

Subshell

定义 Definition

subshell(原子“亚层/副层”):在原子中,同一主能级(shell,电子层)内按角量子数划分的能级分组,通常用 s、p、d、f 表示。
(在计算机领域里,subshell 也可指“子 Shell/子进程的命令解释器环境”。)

发音 Pronunciation (IPA)

/sbel/

例句 Examples

Electrons fill the 2p subshell after the 2s subshell.
电子会在填满 2s 亚层后再填充 2p 亚层。

Because the d subshell can hold up to ten electrons, transition metals often show variable oxidation states.
由于 d 亚层最多可容纳十个电子,过渡金属常常表现出多种氧化态。

词源 Etymology

sub- 表示“次级、下级”,shell 原意为“壳、外层”。在原子结构的语境中,shell 指电子“层”,而 subshell 指层内进一步细分的“亚层”。这一术语随着量子力学与原子光谱学的发展而普及,用于更精确地描述电子的能级与排布。

相关词 Related Words

文学与著作中的用例 Literary Works

  • Introduction to Quantum Mechanics(David J. Griffiths):在讲解角量子数与轨道类型时常用到 subshell
  • Atkins’ Physical Chemistry:讨论原子结构、量子数与电子排布时频繁出现 subshell
  • Chemistry: The Central Science(Brown et al.):在“电子排布与元素周期性”章节中使用 subshell(如 s、p、d、f 亚层)。
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