atomic number

简明释义

原子序

英英释义

例句

1.To find an element on the periodic table, you need to know its atomic number 原子序数.

要在周期表上找到一个元素，你需要知道它的原子序数。

2.The element carbon has an atomic number 原子序数 of 6.

元素碳的原子序数是6。

3.The atomic number 原子序数 determines the number of protons in an atom.

元素的原子序数决定了原子中质子的数量。

4.Hydrogen is the simplest element with an atomic number 原子序数 of 1.

氢是最简单的元素，具有原子序数为1。

5.The atomic number 原子序数 of oxygen is 8, which means it has 8 protons.

氧的原子序数是8，这意味着它有8个质子。

作文

The concept of the atomic number is fundamental in the field of chemistry and physics. It refers to the number of protons found in the nucleus of an atom, which determines the element's identity. For instance, hydrogen, which has one proton, has an atomic number of 1, while helium, with two protons, has an atomic number of 2. This simple yet powerful idea helps us understand the organization of the periodic table, where elements are arranged according to their atomic number. The periodic table not only provides a systematic way to categorize elements but also reveals patterns in their properties and behaviors.Understanding the atomic number is crucial for several reasons. First, it allows scientists to predict how different elements will react with one another. Elements with similar atomic numbers often exhibit similar chemical properties. For example, the alkali metals, which include lithium, sodium, and potassium, all have low atomic numbers and share common characteristics such as high reactivity with water. This predictability is vital for chemists when they synthesize new compounds or study reactions.Moreover, the atomic number plays a significant role in determining the electronic configuration of an atom. The number of electrons in a neutral atom equals its atomic number, meaning that the arrangement of electrons around the nucleus is directly influenced by this number. This arrangement affects how atoms bond with each other to form molecules, which is essential for understanding the structure and function of biological molecules like DNA and proteins.In addition to its importance in chemistry, the atomic number also has implications in fields such as medicine and environmental science. For example, certain isotopes of elements are used in medical imaging and cancer treatment. The atomic number helps determine which isotopes are stable and which are radioactive, guiding their use in various applications.Furthermore, the study of atomic numbers extends into the realm of nuclear physics. The stability of an atom's nucleus is influenced by the ratio of protons to neutrons, which can be partially understood through the lens of atomic number. Understanding these relationships is crucial for advancements in nuclear energy and safety.In conclusion, grasping the concept of the atomic number is essential for anyone interested in the sciences. It serves as a foundation for understanding the properties of elements, predicting chemical reactions, and exploring the complexities of atomic structure. As we continue to make discoveries in science, the significance of the atomic number will remain a key element in our quest for knowledge about the natural world. Whether in chemistry, physics, medicine, or environmental studies, the atomic number is a pivotal concept that connects various scientific disciplines and enhances our understanding of the universe.

“原子序数”这一概念在化学和物理学领域中是基础性的。它指的是一个原子核中质子的数量，这决定了元素的身份。例如，氢的质子数量为1，因此其“原子序数”为1，而氦的质子数量为2，因此其“原子序数”为2。这个简单而强大的概念帮助我们理解周期表的组织，元素根据其“原子序数”排列。周期表不仅提供了一种系统化的方式来分类元素，还揭示了它们性质和行为的规律。理解“原子序数”至关重要，原因有几个。首先，它使科学家能够预测不同元素之间的反应。具有相似“原子序数”的元素通常表现出相似的化学性质。例如，锂、钠和钾等碱金属都具有较低的“原子序数”，并共享一些共同特征，如与水的高反应性。这种可预测性对于化学家在合成新化合物或研究反应时至关重要。此外，“原子序数”在确定原子的电子配置方面也起着重要作用。一个中性原子中的电子数量等于其“原子序数”，这意味着围绕核的电子排列直接受此数字的影响。这种排列影响原子如何结合形成分子，这对于理解生物分子的结构和功能（如DNA和蛋白质）至关重要。除了在化学中的重要性外，“原子序数”在医学和环境科学等领域也有影响。例如，某些元素的同位素用于医学成像和癌症治疗。“原子序数”帮助确定哪些同位素是稳定的，哪些是放射性的，从而指导它们在各种应用中的使用。此外，“原子序数”的研究还扩展到核物理学的领域。原子核的稳定性受到质子与中子比率的影响，而这可以通过“原子序数”的视角部分理解。理解这些关系对于核能和安全的进步至关重要。总之，掌握“原子序数”的概念对任何对科学感兴趣的人来说都是必不可少的。它作为理解元素性质、预测化学反应和探索原子结构复杂性的基础。随着我们在科学领域不断取得发现，“原子序数”的重要性将继续成为我们追求自然世界知识的关键元素。无论是在化学、物理、医学还是环境研究中，“原子序数”都是一个关键概念，连接着各个科学学科，增强了我们对宇宙的理解。