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Transuranium Elements (Encore)

2025/6/15
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Everything Everywhere Daily
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我介绍了超铀元素的概念，它们是原子序数高于铀的元素，多数为人工合成，自然界中极少存在。这些元素通常具有高度放射性和极短的半衰期，因此难以研究和应用。然而，科学家们仍在不断探索和创造新的超铀元素，试图找到所谓的“稳定岛”，即具有相对较长半衰期的超重元素。寻找稳定岛的意义在于，它可能带来对原子结构的新理解，并可能引发材料科学的革命。尽管这些元素存在时间短暂，但它们代表了人类对未知领域的探索和对科学极限的挑战。

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This chapter introduces transuranium elements, explaining their rarity, instability, and human-made nature. It also covers the basics of atomic structure, isotopes, and radioactive decay, providing context for understanding the unique properties of these elements.
  • Transuranium elements are heavier than uranium (atomic number >92).
  • They are not found in nature and are highly unstable.
  • Their existence is due to human creation.
  • Atomic number is determined by the number of protons.
  • Isotopes have different numbers of neutrons.
  • Atomic stability depends on the configuration of protons and neutrons.
  • Larger atomic nuclei tend to be more unstable.

Shownotes Transcript

If you take a look at the periodic table of elements, you will notice something interesting. 

Go to the bottom and take a look at any element over, say, number 94. You will find a bunch of elements you have probably never heard of.

Don’t worry because most chemists probably aren’t familiar with them, either. They are not part of any chemical compounds, cannot be found in nature, and most have only existed for a fraction of a second. 

Learn more about transuranium elements, what they are, and how we even know they exist on this episode of Everything Everywhere Daily.

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