halogens

简明释义

英[/ˈhælədʒənz/]美[/ˈhælədʒənz/]

n. [化学]卤素（halogen 的复数）；卤族

英英释义

单词用法

同义词

反义词

例句

1.Methods involve adding sorbent components, such as calcium oxide, alumina, and silica, as well as optional halogens as part of environmental control.

本发明公开了一种方法，包括加入吸附剂成分，例如氧化钙、氧化铝和二氧化硅，以及可选的卤素，作为环境控制的一部分。

2.The Nissen Low Chloride Metal Marker was specifically designed to safely mark metals which are attacked by halogens and low melting metallics.

Nissen低氯化物金属标志笔特有的设计为安全地标示的金属。

3.All the halogens require one more electron to complete a P-shell.

所有的卤素都要求得到一个额外的电子来填满p壳层。

4.Halogens, especially chlorine, were the principle mineralization agent of Tl and the variation of valence of Tl played an important role in the elemental enrichment and ore formation.

卤素，尤其氯是铊富集成矿的矿化剂，铊价态变化在富集成矿过程中具有重要作用。

5.Oxides of carbon, sulfur, nitrogen and halogens are serious environmental pollutants produced by the productive and social activities of humans.

碳的氧化物、硫的氧化物、氮的氧化物和卤化物等是由人类的生产活动和社会活动产生的重要的环境污染物质。

6.The embossing layer or substrate or both may contain one or more fire retardant materials such as halogens.

压花层或基板或两者可以包含一种或多种阻燃材料，比如卤素。

7.Alkenes react with water and halogens to form halohydrins by an addition reaction.

烯烃与水和卤素发生加成反应生成卤代醇。

8.The Certified Valve Action is a highly-visible liquid paint marker pre-certified to contain low levels of chlorides, halogens, low melting point metals and sulfur.

标准阀动作是一个非常明显的液体油漆标记预认证，含有低浓度的氯化物，卤素，低熔点金属和硫。

9.Pyridine can react with halogens, nitronium fluoroborate, sulfur trioxide, boranes and chromium trioxide to form some useful organic reagents which are introduced briefly in the paper.

吡啶可以和卤素、硝基四氟化硼盐、 三氧化硫、硼烷及三氧化铬反应，形成一些有用的有机试剂。

10.When mixed with metals, halogens (卤素) can form ionic compounds.

与金属混合时，halogens（卤素）可以形成离子化合物。

11.Fluorine is the most reactive of all the halogens (卤素).

氟是所有halogens（卤素）中反应性最强的。

12.The group of elements known as halogens (卤素) includes fluorine, chlorine, bromine, iodine, and astatine.

被称为halogens（卤素）的元素组包括氟、氯、溴、碘和砹。

13.In the periodic table, halogens (卤素) are found in Group 17.

在周期表中，halogens（卤素）位于第17组。

14.Chlorine, a common halogen (卤素), is widely used for water purification.

氯，作为一种常见的halogen（卤素），广泛用于水的净化。

作文

The term halogens refers to a group of chemical elements found in Group 17 of the periodic table. These elements include fluorine, chlorine, bromine, iodine, and astatine. The name halogens is derived from the Greek words 'hals' meaning salt and 'genes' meaning forming or producing, which highlights their ability to form salts when combined with metals. Understanding halogens is crucial for students of chemistry as they play significant roles in various chemical reactions and processes.One of the most notable characteristics of halogens is their high reactivity. They are known to readily form compounds with many other elements, particularly metals, which leads to the formation of ionic compounds. For instance, when sodium (a metal) reacts with chlorine (a halogen), it produces sodium chloride, commonly known as table salt. This reaction illustrates the typical behavior of halogens as they tend to gain electrons to achieve a stable electronic configuration similar to that of noble gases.In addition to their reactivity, halogens exhibit distinct physical properties. For example, fluorine is a pale yellow gas at room temperature, while bromine is a reddish-brown liquid. Iodine appears as a dark gray solid that sublimates into violet vapor when heated. These variations in state and color among halogens are indicative of their unique molecular structures and intermolecular forces.The applications of halogens in everyday life are vast. Chlorine, for example, is widely used in water treatment processes to kill bacteria and other pathogens, ensuring safe drinking water for millions of people. Fluorine is an essential component in toothpaste, helping to prevent dental cavities by strengthening tooth enamel. Additionally, iodine is crucial in the medical field as it is used in antiseptics and imaging procedures due to its ability to absorb X-rays.However, it is important to note that while halogens have beneficial uses, they can also pose risks. For instance, exposure to chlorine gas can be harmful and even fatal if inhaled in large quantities. Similarly, some halogens, like bromine, can be toxic and require careful handling in industrial settings. Therefore, understanding the properties and behaviors of halogens is essential not only for scientific knowledge but also for safety in practical applications.In conclusion, halogens are a fascinating group of elements that exhibit unique properties and play vital roles in both nature and industry. Their ability to react with various substances makes them indispensable in numerous chemical processes. As we continue to explore the world of chemistry, a deeper understanding of halogens will undoubtedly enhance our knowledge of chemical interactions and their implications in our daily lives. Whether it is through their use in household products, medical applications, or industrial processes, the significance of halogens cannot be overstated. Thus, studying these elements provides valuable insights into the complexities of chemical science and its impact on society.

术语卤素指的是周期表第17组中的一组化学元素。这些元素包括氟、氯、溴、碘和砹。卤素这个名字源于希腊语单词'hals'，意为盐，'genes'，意为形成或产生，这突显了它们与金属结合时形成盐的能力。理解卤素对于化学学生来说至关重要，因为它们在各种化学反应和过程中发挥着重要作用。卤素最显著的特征之一是它们的高反应性。它们以容易与许多其他元素，特别是金属形成化合物而闻名，这导致离子化合物的形成。例如，当钠（一个金属）与氯（一个卤素）反应时，它会产生氯化钠，通常被称为食盐。这一反应说明了卤素的典型行为，因为它们倾向于获得电子，以实现类似于惰性气体的稳定电子配置。除了其反应性外，卤素还表现出独特的物理性质。例如，氟在室温下是一种淡黄色气体，而溴是一种红棕色液体。碘呈深灰色固体，加热时升华成紫色蒸汽。这些卤素之间的状态和颜色变化表明它们独特的分子结构和分子间作用力。卤素在日常生活中的应用非常广泛。例如，氯被广泛用于水处理过程，以消灭细菌和其他病原体，确保数百万人安全饮用水。氟是牙膏的重要成分，有助于通过强化牙釉质来预防龋齿。此外，碘在医疗领域至关重要，因为它用于消毒剂和成像程序，因其能够吸收X射线。然而，重要的是要注意，虽然卤素有益的用途，但它们也可能带来风险。例如，接触氯气可能是有害的，甚至在大量吸入时致命。同样，一些卤素，如溴，可能是有毒的，需要在工业环境中小心处理。因此，理解卤素的性质和行为不仅对科学知识至关重要，而且对实际应用中的安全性也至关重要。总之，卤素是一组迷人的元素，展现出独特的性质，在自然和工业中发挥着重要作用。它们与各种物质反应的能力使它们在众多化学过程中不可或缺。随着我们继续探索化学世界，对卤素的更深入理解无疑将增强我们对化学相互作用及其在日常生活中影响的认识。无论是通过它们在家庭产品、医疗应用还是工业过程中的使用，卤素的重要性都不容小觑。因此，研究这些元素提供了对化学科学复杂性的宝贵见解，以及其对社会的影响。