transition element

简明释义

过渡元素

英英释义

例句

1.Zinc is often included in discussions about transition elements because of its important biological roles.

锌常常被纳入关于过渡元素的讨论，因为它在生物中扮演着重要角色。

2.The transition elements are known for their ability to form complex ions.

过渡元素以其形成复杂离子的能力而闻名。

3.In the periodic table, the transition elements are found in groups 3 to 12.

在周期表中，过渡元素位于第3到第12组。

4.Copper, a transition element, is widely used in electrical wiring due to its excellent conductivity.

铜作为一种过渡元素，因其优良的导电性而广泛用于电线电缆。

5.Iron, as a common transition element, plays a crucial role in steel production.

铁作为一种常见的过渡元素，在钢铁生产中起着至关重要的作用。

作文

Transition elements, often referred to as transition metals, are a group of metallic elements that have unique properties. These elements, which include iron, copper, and nickel, are found in the d-block of the periodic table. The significance of transition element (过渡元素) lies not only in their abundance but also in their diverse applications across various fields. One of the most interesting characteristics of transition elements (过渡元素) is their ability to form variable oxidation states. This means they can lose different numbers of electrons, allowing them to participate in a wide range of chemical reactions. For instance, iron can exist in both +2 and +3 oxidation states, making it versatile in biological and industrial processes.Another remarkable feature of transition elements (过渡元素) is their capacity to form colored compounds. This is due to the presence of unpaired electrons in their d-orbitals. When light hits these compounds, certain wavelengths are absorbed, while others are reflected, resulting in vibrant colors. For example, copper sulfate appears blue because it absorbs light in the red region of the spectrum. This property is not only fascinating from a scientific perspective but also has practical applications in art and design.Moreover, transition elements (过渡元素) are crucial catalysts in chemical reactions. Their ability to facilitate reactions without being consumed makes them invaluable in industrial processes. Catalysts such as platinum and palladium, both transition elements (过渡元素), are used in catalytic converters in cars to reduce harmful emissions. Their role in speeding up reactions while lowering energy requirements is essential for sustainable practices.The magnetic properties of transition elements (过渡元素) also make them unique. Elements like iron, cobalt, and nickel exhibit ferromagnetism, which is the ability to become magnetized. This characteristic is exploited in various applications, including the production of magnets and magnetic storage devices. The study of these properties contributes significantly to our understanding of materials science and engineering.In addition to their physical and chemical properties, transition elements (过渡元素) play vital roles in biological systems. Many enzymes, which are essential for life processes, contain transition metals (过渡金属) in their active sites. For example, hemoglobin, the protein responsible for oxygen transport in the blood, contains iron. This highlights the importance of transition elements (过渡元素) in maintaining life and supporting various biochemical functions.In conclusion, transition elements (过渡元素) are a fascinating group of elements that possess unique properties and play essential roles in both nature and industry. Their ability to form variable oxidation states, create colored compounds, act as catalysts, exhibit magnetic properties, and support biological functions underscores their significance. Understanding transition elements (过渡元素) is crucial for advancements in chemistry, materials science, and biology. As we continue to explore their potential, we uncover new ways to utilize these remarkable elements for the betterment of society and the environment.

过渡元素，通常被称为过渡金属，是一组具有独特性质的金属元素。这些元素，包括铁、铜和镍，位于元素周期表的d区。过渡元素的（transition element）重要性不仅体现在它们的丰富性上，还体现在它们在各个领域的多种应用中。过渡元素（transition elements）最有趣的特征之一是它们能够形成可变的氧化态。这意味着它们可以失去不同数量的电子，从而参与各种化学反应。例如，铁可以以+2和+3的氧化态存在，使其在生物和工业过程中具有多样性。过渡元素（transition elements）另一个显著的特点是它们能够形成有色化合物。这是由于它们的d轨道中存在未成对电子。当光照射到这些化合物时，某些波长会被吸收，而其他波长则被反射，从而导致鲜艳的颜色。例如，硫酸铜呈蓝色，因为它吸收了红色区域的光。这一特性不仅从科学角度令人着迷，还在艺术和设计中具有实际应用。此外，过渡元素（transition elements）在化学反应中是至关重要的催化剂。它们能够促进反应而不被消耗，这使得它们在工业过程中不可或缺。铂和钯等催化剂，都是过渡元素（transition elements），被用于汽车的催化转换器中，以减少有害排放。它们在加速反应并降低能量需求方面的作用对于可持续实践至关重要。过渡元素（transition elements）的磁性特性也使它们独特。铁、钴和镍等元素表现出铁磁性，即能够被磁化。这一特性被广泛应用于磁铁和磁存储设备的生产中。对这些特性的研究在材料科学和工程领域的理解中贡献重大。除了它们的物理和化学性质外，过渡元素（transition elements）在生物系统中也发挥着重要作用。许多酶，生命过程所必需的，含有过渡金属（transition metals）作为其活性位点。例如，血红蛋白负责在血液中运输氧气，含有铁。这突显了过渡元素（transition elements）在维持生命和支持各种生化功能中的重要性。总之，过渡元素（transition elements）是一组迷人的元素，具有独特的性质，并在自然和工业中发挥着重要作用。它们形成可变氧化态、创造有色化合物、作为催化剂、表现出磁性以及支持生物功能的能力凸显了它们的重要性。理解过渡元素（transition elements）对于化学、材料科学和生物学的进步至关重要。随着我们继续探索它们的潜力，我们发现了利用这些非凡元素的新方法，为社会和环境的改善作出贡献。