astatine

简明释义

英[ˈæstətiːn]美[ˈæstətiːn]

n. [化学]砹（化学元素 At）

英英释义

单词用法

同义词

反义词

例句

1.On Earth rarest element astatine.

地球上最稀有的元素砹。

2.On Earth rarest element astatine.

地球上最稀有的元素砹。

3.Due to its radioactivity, handling astatine requires special precautions.

由于其放射性，处理砹需要特别的防护措施。

4.Scientists are studying astatine for its potential use in targeted alpha-particle cancer therapy.

科学家们正在研究砹在靶向α粒子癌症疗法中的潜在应用。

5.The half-life of astatine isotopes is very short, making them difficult to study.

由于砹同位素的半衰期非常短，因此很难进行研究。

6.The element astatine is one of the rarest naturally occurring elements on Earth.

元素砹是地球上自然存在的稀有元素之一。

7.Astatine is classified as a halogen and is located in Group 17 of the periodic table.

砹被归类为卤素，位于元素周期表的第17组。

作文

Astatine is a fascinating element that often goes unnoticed in the periodic table. As a member of the halogen group, it is represented by the symbol At. Although it is one of the rarest naturally occurring elements on Earth, its unique properties and potential applications make it an intriguing subject for both chemists and physicists alike. Astatine（砹） is highly radioactive, with no stable isotopes, which contributes to its scarcity and makes it difficult to study. It was first discovered in 1940 by a team of scientists at the University of California, Berkeley, who synthesized it by bombarding bismuth with alpha particles. The name astatine comes from the Greek word 'astatos,' meaning unstable, which aptly describes its fleeting existence in nature.One of the most interesting aspects of astatine is its radioactivity. It has a half-life that varies among its isotopes, but the most stable one, At-210, has a half-life of about 8.1 hours. This means that it decays rapidly, which poses challenges for researchers who wish to explore its chemical behavior. Despite its instability, astatine exhibits some similar properties to other halogens, such as iodine. In fact, it is often compared to iodine due to their similarities in atomic structure and reactivity.The rarity of astatine makes it an element of great interest for scientific research, particularly in the fields of medicine and nuclear science. Some studies have suggested that isotopes of astatine could be used in targeted alpha-particle therapy for cancer treatment. This method involves using radioactive isotopes to destroy cancer cells while minimizing damage to surrounding healthy tissue. Although this application is still largely experimental, it holds promise for the future of cancer therapy.Moreover, the unique properties of astatine allow it to form compounds that could have various industrial applications. For instance, researchers are investigating the potential use of astatine in the development of new materials or catalysts that could improve chemical reactions. However, due to its scarcity and radioactivity, practical applications are currently limited.In conclusion, astatine is an element that embodies the complexities of the natural world. Its rarity, radioactivity, and potential applications in medicine and industry make it a captivating topic for study. As research continues to evolve, we may uncover more about this elusive element and its place in the periodic table. Understanding astatine not only enriches our knowledge of chemistry but also opens doors to innovative solutions in various scientific fields. The journey of exploring astatine is just beginning, and the possibilities it presents are as intriguing as the element itself.

砹是一种迷人的元素，常常在元素周期表中被忽视。作为卤素族的一员，它的符号是At。尽管它是地球上自然存在的最稀有元素之一，但其独特的性质和潜在应用使其成为化学家和物理学家都感兴趣的主题。砹（astatine）高度放射性，没有稳定的同位素，这导致其稀缺性，并使其难以研究。它于1940年首次由加州大学伯克利分校的一组科学家发现，他们通过轰击铋与α粒子合成了它。砹这个名字来源于希腊语“astatos”，意为不稳定，这恰如其分地描述了它在自然界中短暂的存在。砹最有趣的一个方面是它的放射性。它的半衰期因同位素而异，但最稳定的同位素At-210的半衰期约为8.1小时。这意味着它迅速衰变，这给希望探索其化学行为的研究人员带来了挑战。尽管不稳定，砹表现出一些与其他卤素相似的特性，例如碘。事实上，由于它们在原子结构和反应性上的相似性，砹常常与碘进行比较。砹的稀有性使其成为科学研究中的一个重要元素，特别是在医学和核科学领域。一些研究表明，砹的同位素可以用于癌症治疗中的靶向α粒子疗法。这种方法涉及使用放射性同位素摧毁癌细胞，同时最小化对周围健康组织的损害。尽管这种应用仍然主要是实验性的，但它为癌症疗法的未来带来了希望。此外，砹的独特性质使其能够形成可能具有各种工业应用的化合物。例如，研究人员正在调查砹在开发新材料或催化剂方面的潜在用途，这些材料或催化剂可以改善化学反应。然而，由于其稀缺性和放射性，实际应用目前仍然有限。总之，砹是一个体现自然世界复杂性的元素。它的稀有性、放射性以及在医学和工业中的潜在应用使其成为一个引人入胜的研究主题。随着研究的不断发展，我们可能会揭示更多关于这个难以捉摸的元素及其在元素周期表中的位置。理解砹不仅丰富了我们对化学的知识，也为各种科学领域的创新解决方案打开了大门。探索砹的旅程才刚刚开始，它所展现的可能性与这个元素本身一样引人入胜。