论文部分内容阅读
一、地壳丰度中偶数规则的破坏偶数规则(或偶一奇规则)是元素丰度的基本规律.它表述偶原子序数元素的丰度,比其相邻的奇原子序数元素的丰度高.这一规律在同位素丰度中表现为质量数的偶一奇性,称为Oddo-Harkins 定律.偶数规则普遍地存在于宇宙、地球和地壳的元素丰度中.其中以宇宙丰度表现得最完整.除H、He、Li 和Be 四种元素外,无一例外地都遵从着偶数规则(图1).
First, the destruction of even-numbered rules in the crust abundance Even-numbered rules (or even odd rules) are the basic laws of element abundance, which express the abundance of even-numbered atomic elements more abundant than their adjacent odd-numbered atomic elements . This law is characterized by the odd singularity of mass in the abundance of isotopes, called the Oddo-Harkins law. The even-numbered rules generally exist in the elemental abundances of the universe, the earth, and the crust, of which the abundance of the universe Most complete, with the exception of H, He, Li and Be four elements, without exception, are subject to even rules (Figure 1).