transition element

简明释义

过度元素

英英释义

例句

1.Copper, a transition element, is widely used in electrical wiring.

铜是一种被广泛应用于电线的过渡元素。

2.Iron is a common transition element in the periodic table.

铁是周期表中常见的过渡元素。

3.Many transition elements can form colorful compounds.

许多过渡元素可以形成色彩鲜艳的化合物。

4.The properties of transition elements make them useful in catalysts.

由于过渡元素的特性，它们在催化剂中非常有用。

5.Nickel is another important transition element used in alloys.

镍是另一种在合金中使用的重要过渡元素。

作文

The periodic table of elements is a fascinating representation of the building blocks of matter. Among the various categories of elements, the transition element (过渡元素) group stands out due to its unique properties and significance in various chemical reactions. Transition elements are defined as those metallic elements that have an incomplete d-subshell in one or more of their oxidation states. This characteristic leads to distinct behaviors that differentiate them from other metals. One of the most notable features of transition elements (过渡元素) is their ability to form colored compounds. For example, when copper is oxidized, it can produce blue solutions, while iron can yield yellow or reddish hues depending on its oxidation state. This property is not just aesthetically pleasing; it also plays a crucial role in analytical chemistry where color changes can indicate the presence of certain ions. Furthermore, transition elements (过渡元素) are known for their catalytic properties. Many transition metals, such as platinum and palladium, are used as catalysts in industrial processes. They facilitate chemical reactions without being consumed in the process, making them invaluable in the production of chemicals, fuels, and even in automotive converters that reduce harmful emissions.In addition to their practical applications, transition elements (过渡元素) are essential for biological systems. For instance, iron is a key component of hemoglobin, the molecule responsible for transporting oxygen in our blood. Similarly, manganese and zinc play vital roles in various enzymatic processes within living organisms. The presence of these elements in biological systems highlights their importance beyond mere chemical curiosities.Another interesting aspect of transition elements (过渡元素) is their ability to form complex ions. These complexes can exhibit a range of geometries and coordination numbers, leading to diverse chemical behavior. For example, cobalt can form octahedral complexes with six ligands or tetrahedral complexes with four ligands, showcasing the versatility of these elements in coordination chemistry.Moreover, the magnetic properties of transition elements (过渡元素) are intriguing. Many of these metals exhibit paramagnetism due to the presence of unpaired electrons in their d-orbitals. This phenomenon is utilized in various technologies, including magnetic resonance imaging (MRI), which relies on the magnetic properties of certain transition metals to produce detailed images of the human body.In conclusion, the study of transition elements (过渡元素) reveals a wealth of knowledge about both the natural world and industrial applications. Their unique properties, such as the ability to form colorful compounds, act as catalysts, participate in biological processes, create complex ions, and exhibit magnetic behavior, make them a crucial area of study in chemistry. Understanding these elements not only enhances our grasp of chemical principles but also opens doors to innovations in technology and medicine. As we continue to explore the complexities of transition elements (过渡元素), we uncover new possibilities that can benefit society and improve our quality of life.

元素周期表是物质基本构成的迷人表现。在各种元素类别中，过渡元素（transition element）组因其独特的性质和在各种化学反应中的重要性而脱颖而出。过渡元素被定义为在一个或多个氧化态中具有不完全的d轨道的金属元素。这一特征导致了与其他金属不同的独特行为。过渡元素（transition element）最显著的特征之一是它们能够形成有色化合物。例如，当铜被氧化时，可以产生蓝色溶液，而铁则可以根据其氧化态产生黄色或红色的色调。这一特性不仅在美学上令人愉悦；它在分析化学中也发挥着至关重要的作用，其中颜色变化可以指示某些离子的存在。此外，过渡元素（transition element）以其催化特性而闻名。许多过渡金属，如铂和钯，被用作工业过程中的催化剂。它们促进化学反应而不被消耗，从而在化学、燃料的生产，甚至在减少有害排放的汽车催化转化器中变得不可或缺。除了它们的实际应用，过渡元素（transition element）对生物系统至关重要。例如，铁是血红蛋白的关键成分，血红蛋白负责运输我们血液中的氧气。类似地，锰和锌在生物体内的各种酶促反应中发挥着重要作用。这些元素在生物系统中的存在突显了它们超越简单化学好奇心的重要性。过渡元素（transition element）的另一个有趣方面是它们能够形成配合离子。这些配合物可以展示出多种几何形状和配位数，导致多样化的化学行为。例如，钴可以与六个配体形成八面体配合物，或与四个配体形成四面体配合物，展示了这些元素在配位化学中的多功能性。此外，过渡元素（transition element）的磁性特性也引人入胜。这些金属中的许多由于d轨道中存在未配对电子而表现出顺磁性。这一现象在各种技术中得到了利用，包括磁共振成像（MRI），该技术依赖于某些过渡金属的磁性特性来生成详细的人体图像。总之，研究过渡元素（transition element）揭示了关于自然世界和工业应用的丰富知识。它们独特的性质，例如形成彩色化合物、作为催化剂、参与生物过程、创造配合离子和表现出磁性行为，使它们成为化学研究的重要领域。了解这些元素不仅增强了我们对化学原理的理解，还为技术和医学中的创新打开了大门。随着我们继续探索过渡元素（transition element）的复杂性，我们发现了可以惠及社会并改善我们生活质量的新可能性。