electronegative

简明释义

英[ɪˌlektrəʊˈneɡətɪv]美[ɪˌlektroʊˈneɡətɪv]

adj. 带负电的，负电性的

英英释义

单词用法

同义词

反义词

例句

1.Distinguish above all so bacterium of cause of disease is bacterium of positive of change orchid family name or electronegative bacterium choosing antibiotic respect meaning great.

所以首先区分病原菌是革兰氏阳性菌还是阴性菌，在选择抗生素方面意义重大。

2.Sometimes we have a very electronegative atom that's going to take more of its equal share of electron density.

有时候我们会有一个电负性很高的原子，它将会获取更多的共用电子密度。

3.It is believed that the higher osmosis and the electronegative and chemical toxicities of iodine of the ionic contrast medium are responsible for the higher acceleration.

作者认为离子型造影剂的高渗性、负电荷和碘的化学毒性是促使冠状动脉狭窄进展的原因之一。

4.The forming mechanism of natrolite has been illustrated by electronegative ion polyhedron of coordination growths unit theoretical model.

还用负离子配位多面体生长基元理论模型分析解释了钠沸石的合成机理。

5.RH electronegative blood, who can explain?

RH阴性血，谁能解释一下？

6.The structure of electrostatic plasma magnetic sheath and electronegative plasma magnetic sheath are numerical simulated by fluid method.

用流体方法数值模拟了电子离子磁鞘和电负性磁鞘的结构，分析了鞘层的特性和磁场的影响。

7.In a water molecule, oxygen is more electronegative than hydrogen, which leads to a polar bond.

在水分子中，氧的电负性比氢更强，这导致了极性键的形成。

8.The electronegative nature of fluorine makes it one of the most reactive elements in the periodic table.

氟的电负性特性使其成为元素周期表中反应性最强的元素之一。

9.When forming ionic bonds, atoms with high electronegative values tend to attract electrons from less electronegative atoms.

在形成离子键时，具有高电负性值的原子倾向于从电负性较低的原子吸引电子。

10.Chlorine is highly electronegative, which is why it readily forms compounds with metals.

氯的电负性很高，这就是它容易与金属形成化合物的原因。

11.The concept of electronegative elements helps explain the behavior of molecules in chemical reactions.

电负性元素的概念有助于解释分子在化学反应中的行为。

作文

In the realm of chemistry, understanding the concept of electronegativity is crucial for grasping how atoms interact with one another. Electronegativity can be defined as the tendency of an atom to attract electrons towards itself when it is part of a compound. Atoms that exhibit a high degree of this property are referred to as electronegative (电负性), meaning they have a strong ability to pull electrons from neighboring atoms. This characteristic plays a significant role in determining the nature of chemical bonds and the behavior of molecules. For instance, consider the water molecule (H2O). In this molecule, oxygen is much more electronegative (电负性) than hydrogen. As a result, the oxygen atom attracts the shared electrons more strongly than the hydrogen atoms do. This unequal sharing of electrons leads to a polar covalent bond, where the oxygen atom acquires a partial negative charge while the hydrogen atoms acquire a partial positive charge. This polarity is responsible for many of water's unique properties, such as its ability to dissolve many substances and its high surface tension. The periodic table provides a clear view of electronegativity trends. Generally, electronegativity increases across a period from left to right and decreases down a group. This means that elements on the right side of the periodic table, such as fluorine and oxygen, are highly electronegative (电负性), while those on the left, like sodium and potassium, are less so. Fluorine, in particular, is the most electronegative (电负性) element known, making it extremely reactive and capable of forming strong bonds with other elements. Understanding electronegativity also helps in predicting the types of bonds that will form between different elements. For example, when two atoms with significantly different electronegativities bond, the result is typically an ionic bond. This occurs because the more electronegative (电负性) atom will completely take an electron from the less electronegative (电负性) atom, resulting in the formation of charged ions. Conversely, when two atoms with similar electronegativities bond, they tend to form covalent bonds, where electrons are shared more equally. Moreover, the concept of electronegativity is not only relevant in inorganic chemistry but also in organic chemistry and biochemistry. For instance, in biological systems, the electronegativity of atoms influences molecular interactions, enzyme activity, and metabolic pathways. The balance of electronegative (电负性) and electropositive elements in biomolecules is essential for maintaining the structure and function of proteins, nucleic acids, and lipids. In conclusion, the concept of electronegative (电负性) atoms is fundamental to understanding chemical bonding and molecular behavior. By recognizing the electronegativity of various elements, chemists can predict the nature of chemical reactions and the properties of compounds formed. Whether in the laboratory or in nature, the principles of electronegativity continue to play a vital role in the study of chemistry and its applications in our daily lives.

在化学领域，理解电负性的概念对于掌握原子之间的相互作用至关重要。电负性可以定义为原子在化合物中吸引电子的倾向。表现出高度这一特性的原子被称为电负性（电负性），这意味着它们具有强大的能力从邻近原子那里拉取电子。这一特征在决定化学键的性质和分子的行为方面发挥着重要作用。 例如，考虑水分子（H2O）。在这个分子中，氧的电负性远高于氢。因此，氧原子比氢原子更强烈地吸引共享电子。这种电子的不等分享导致了极性共价键的形成，其中氧原子获得部分负电荷，而氢原子获得部分正电荷。这种极性是水的许多独特性质的根源，例如它能够溶解许多物质和其高表面张力。 周期表清晰地展示了电负性的趋势。一般来说，电负性在一个周期内从左到右增加，而在一个族中向下减少。这意味着周期表右侧的元素，如氟和氧，具有较高的电负性（电负性），而左侧的元素，如钠和钾，则较低。特别是氟是已知的最具电负性（电负性）元素，使其极具反应性，能够与其他元素形成强键。 理解电负性还有助于预测不同元素之间将形成的键的类型。例如，当两个具有显著不同电负性的原子结合时，通常会形成离子键。这是因为更电负性（电负性）的原子将完全从较少电负性（电负性）的原子那里夺取一个电子，从而形成带电离子。相反，当两个电负性相似的原子结合时，它们往往形成共价键，即电子更均等地共享。 此外，电负性的概念不仅在无机化学中相关，在有机化学和生物化学中也同样重要。例如，在生物系统中，原子的电负性影响分子间的相互作用、酶活性和代谢途径。生物分子中电负性（电负性）和电正性元素的平衡对于维持蛋白质、核酸和脂质的结构和功能至关重要。 总之，电负性（电负性）原子的概念是理解化学键和分子行为的基础。通过认识各种元素的电负性，化学家可以预测化学反应的性质和形成的化合物的特性。无论是在实验室还是在自然界，电负性的原则继续在化学及其在我们日常生活中的应用中发挥着重要作用。