atomic number

简明释义

原子序数

英英释义

例句

1.The element hydrogen has an atomic number 原子序数 of 1.

氢元素的原子序数是1。

2.The atomic number 原子序数 determines the identity of an element.

元素的身份由其原子序数决定。

3.In the periodic table, each element is organized by its atomic number 原子序数.

在周期表中，每个元素都是按其原子序数进行组织的。

4.Oxygen has an atomic number 原子序数 of 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。

5.Carbon's atomic number 原子序数 is 6, indicating it has 6 protons in its nucleus.

碳的原子序数是6，表示其核内有6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 of a particular element. This number not only determines the identity of the element but also plays a crucial role in defining its chemical properties. For instance, hydrogen, which has an atomic number of 1, is the simplest and most abundant element in the universe, while uranium, with an atomic number of 92, is known for its use in nuclear energy and weapons.Understanding the atomic number is essential for students and professionals in scientific fields. It helps in organizing elements in the periodic table, where elements are arranged in order of increasing atomic number. This arrangement reveals trends in element properties, such as electronegativity, ionization energy, and atomic radius. For example, as you move from left to right across a period in the periodic table, the atomic number increases, and generally, the reactivity of metals decreases while that of nonmetals increases.Furthermore, the atomic number is critical in understanding isotopes. Isotopes are variants of a particular chemical element that have the same number of protons (and thus the same atomic number) but different numbers of neutrons. This difference can affect the stability of the atom and its behavior in nuclear reactions. For example, carbon-12 and carbon-14 are both isotopes of carbon, with the same atomic number of 6 but differing in their neutron count, leading to different applications in fields like archaeology and medicine.In practical applications, knowledge of the atomic number is vital in various industries. In pharmaceuticals, understanding the atomic number of elements helps in drug design and development, ensuring that compounds interact correctly at the molecular level. In environmental science, knowing the atomic number aids in tracking elements and their compounds in ecosystems, contributing to pollution control and sustainability efforts.Moreover, the atomic number also has implications in technology. In the field of electronics, materials with specific atomic numbers are chosen for their conductive or semiconductive properties, which are essential in the manufacture of devices such as smartphones and computers. The unique properties of elements based on their atomic number allow for innovation in technology and engineering, driving advancements that shape our modern world.In conclusion, the atomic number is not just a simple numerical value; it is a key to understanding the behavior of elements and their interactions. From the organization of the periodic table to practical applications in various fields, the atomic number enriches our comprehension of the material world. As we continue to explore and innovate, the significance of the atomic number will undoubtedly remain a cornerstone of scientific inquiry and technological progress.

原子序数的概念在化学和物理学领域中是基础性的。它指的是特定元素原子核中所含质子的数量。这个数字不仅决定了元素的身份，还在定义其化学性质方面发挥着至关重要的作用。例如，氢的原子序数为1，是宇宙中最简单和最丰富的元素，而铀的原子序数为92，以其在核能和武器中的应用而闻名。理解原子序数对于科学领域的学生和专业人士来说至关重要。它有助于在周期表中组织元素，元素按原子序数递增的顺序排列。这种排列揭示了元素性质的趋势，例如电负性、离子化能和原子半径。例如，当你从周期表的一侧向另一侧移动时，原子序数增加，通常金属的反应性降低，而非金属的反应性增加。此外，原子序数在理解同位素方面也至关重要。同位素是特定化学元素的变体，它们具有相同数量的质子（因此相同的原子序数），但中子数量不同。这种差异会影响原子的稳定性及其在核反应中的行为。例如，碳-12和碳-14都是碳的同位素，具有相同的原子序数6，但中子数量不同，导致它们在考古学和医学等领域的不同应用。在实际应用中，了解原子序数在各个行业中至关重要。在制药行业，理解元素的原子序数有助于药物设计和开发，确保化合物在分子层面上的正确相互作用。在环境科学中，了解原子序数有助于追踪生态系统中的元素及其化合物，有助于污染控制和可持续发展努力。此外，原子序数在技术方面也有影响。在电子领域，选择具有特定原子序数的材料是因为它们的导电或半导电特性，这在智能手机和计算机等设备的制造中至关重要。基于原子序数的元素独特属性使得技术和工程方面的创新成为可能，推动了塑造我们现代世界的进步。总之，原子序数不仅仅是一个简单的数值；它是理解元素及其相互作用的关键。从周期表的组织到各个领域的实际应用，原子序数丰富了我们对物质世界的理解。随着我们继续探索和创新，原子序数的重要性无疑将继续成为科学探究和技术进步的基石。