electronegative element

简明释义

负电性元素

英英释义

例句

1.The presence of an electronegative element 电负性元素 in a molecule can create polar bonds.

分子中存在一个电负性元素 电负性元素可以产生极性键。

2.Fluorine is the most electronegative element 电负性元素 on the periodic table.

氟是周期表上电负性最强的电负性元素 电负性元素。

3.When two atoms form a bond, the one that is more electronegative element 电负性元素 will pull the shared electrons closer to itself.

当两个原子形成化学键时，那个更具电负性元素 电负性元素的原子会将共享电子拉得更近。

4.In a water molecule, oxygen is an electronegative element 电负性元素 that attracts electrons more than hydrogen.

在水分子中，氧是一个电负性元素 电负性元素，它比氢更能吸引电子。

5.In organic chemistry, functional groups often contain electronegative elements 电负性元素 like oxygen and nitrogen.

在有机化学中，功能团通常含有像氧和氮这样的电负性元素 电负性元素。

作文

In the study of chemistry, understanding the properties of elements is crucial for grasping the fundamentals of chemical reactions. One important concept in this realm is that of an electronegative element, which refers to an atom's ability to attract electrons towards itself when it forms a chemical bond. This property plays a significant role in determining how different substances interact with one another. For instance, in a water molecule (H2O), oxygen is a highly electronegative element, which means it pulls the shared electrons closer to itself compared to hydrogen. This unequal sharing of electrons results in a polar molecule, giving water its unique characteristics such as high surface tension and solvent capabilities.The periodic table provides insight into which elements are considered electronegative elements. Generally, elements found on the right side of the periodic table, particularly the halogens and oxygen, exhibit high electronegativity. In contrast, metals located on the left side tend to have low electronegativity. The difference in electronegativity between two bonded atoms can influence the type of bond formed: ionic or covalent. When the difference is large, typically greater than 1.7, an ionic bond is formed, where one atom completely transfers its electron to another. Conversely, if the electronegativity difference is small, a covalent bond is created, characterized by the sharing of electrons.Understanding electronegative elements is not only essential for theoretical chemistry but also has practical implications in various fields, including biology and materials science. For example, in biological systems, the electronegativity of elements like oxygen and nitrogen is vital for the formation of proteins and nucleic acids. These molecules rely on the specific interactions between atoms, influenced by their electronegativity, to maintain their structure and function.Moreover, the concept of electronegative elements extends beyond individual atoms to the entire molecular structure. The presence of highly electronegative atoms in organic compounds can affect their reactivity and stability. For instance, in organic chemistry, the presence of electronegative atoms like chlorine or fluorine can significantly alter the behavior of a molecule, making it more reactive or altering its solubility in different solvents.In conclusion, the term electronegative element encapsulates a fundamental aspect of chemistry that influences the behavior of atoms and molecules. By understanding the concept of electronegativity, scientists can predict how different elements will interact, leading to advancements in various scientific disciplines. As we continue to explore the intricacies of chemical bonding and molecular interactions, the significance of electronegative elements remains a critical area of focus, underscoring the interconnectedness of all matter in the universe.

在化学研究中，理解元素的性质对掌握化学反应的基本原理至关重要。在这个领域，一个重要的概念是电负性元素，它指的是原子在形成化学键时吸引电子的能力。这一性质在决定不同物质如何相互作用方面发挥着重要作用。例如，在水分子（H2O）中，氧是一个高度的电负性元素，这意味着它将共享的电子拉得比氢更近。这种不均匀的电子共享导致了极性分子的形成，使水具有独特的特性，如高表面张力和溶剂能力。周期表提供了关于哪些元素被认为是电负性元素的见解。通常，周期表右侧的元素，特别是卤素和氧，表现出较高的电负性。相比之下，位于左侧的金属元素往往具有低电负性。两个结合原子之间的电负性差异可以影响形成的键的类型：离子键或共价键。当差异较大，通常大于1.7时，形成离子键，其中一个原子完全将其电子转移给另一个原子。相反，如果电负性差异较小，则形成共价键，其特征是电子的共享。理解电负性元素不仅对理论化学至关重要，而且在生物学和材料科学等各个领域都有实际意义。例如，在生物系统中，氧和氮等元素的电负性对于蛋白质和核酸的形成至关重要。这些分子依赖于原子之间的特定相互作用，而这些相互作用受到它们电负性的影响，以维持其结构和功能。此外，电负性元素的概念不仅局限于单个原子，还扩展到整个分子结构。高电负性原子在有机化合物中的存在可以影响其反应性和稳定性。例如，在有机化学中，氯或氟等电负性原子的存在可以显著改变分子的行为，使其更加反应性或改变其在不同溶剂中的溶解性。总之，术语电负性元素概括了化学的一个基本方面，影响原子和分子的行为。通过理解电负性这一概念，科学家可以预测不同元素之间的相互作用，从而推动各个科学学科的发展。随着我们继续探索化学键和分子相互作用的复杂性，电负性元素的重要性仍然是一个关键的关注领域，突显了宇宙中所有物质的相互联系。