unpaired electron

例句：

1. 1. The physicist discovered that the unpaired electrons in the atoms were responsible for their reactivity.
   物理学家发现原子中的未配对电子是导致它们反应性的原因。
2. 2.The scientists found that the unpaired electrons in the atoms could be used to create new materials.
   科学家发现原子中的未配对电子可以用来创造新材料。
3. 3.The researchers proposed a theory that explained how the unpaired electrons in the atoms could interact with each other and affect the properties of matter.
   研究人员提出了一个理论，解释了原子中未配对电子如何相互作用并影响物质的性质。