atomic number

简明释义

原子序

英英释义

例句

1.To find the atomic number 原子序数 of carbon, you can look it up on the periodic table.

要找出碳的原子序数，你可以在元素周期表上查找。

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

一个原子的原子序数决定了它的质子数。

3.The element helium has an atomic number 原子序数 of 2.

元素氦的原子序数是2。

4.Oxygen has an atomic number 原子序数 of 8.

氧的原子序数是8。

5.The atomic number 原子序数 of sodium is 11, which means it has 11 protons.

钠的原子序数是11，这意味着它有11个质子。

作文

The concept of atomic number is fundamental to the field of chemistry and physics. It refers to the number of protons found in the nucleus of an atom, which ultimately determines the element's identity. For instance, hydrogen has an atomic number of 1, meaning it possesses one proton, while carbon has an atomic number of 6, indicating six protons in its nucleus. This simple yet powerful idea allows scientists to categorize elements in the periodic table, facilitating our understanding of chemical behavior and reactions.The atomic number not only defines the type of element but also influences its properties. Elements with the same atomic number share similar chemical behaviors. For example, all elements in group 1 of the periodic table, such as lithium, sodium, and potassium, have a single electron in their outermost shell. This commonality arises from their identical atomic number, which leads to similar reactivity patterns. Moreover, the atomic number plays a crucial role in determining the arrangement of electrons around the nucleus. The number of electrons in a neutral atom equals the atomic number, which governs how atoms bond with each other. Understanding the relationship between atomic number, electron configuration, and chemical bonding is essential for predicting how different substances will interact in various conditions.In practical applications, the atomic number also informs fields like medicine and engineering. For instance, in medical imaging, certain isotopes are used based on their atomic number to produce clearer images of internal organs. In nuclear power, the atomic number of uranium is vital for understanding its fission properties, which are harnessed to generate energy.Furthermore, the atomic number aids in the study of isotopes. Isotopes are variants of elements that have the same atomic number but different numbers of neutrons. This distinction is important in fields like archaeology, where carbon dating relies on the atomic number of carbon isotopes to estimate the age of organic materials. In summary, the atomic number is more than just a numerical value; it is a key that unlocks the mysteries of atomic structure and chemical properties. By understanding the significance of the atomic number, students and professionals alike can appreciate the intricate relationships that govern the behavior of matter. As we continue to explore the universe at the atomic level, the atomic number will remain a cornerstone of scientific inquiry, guiding us toward new discoveries and innovations that shape our world. In conclusion, the atomic number (原子序数) is a crucial concept in understanding the nature of elements and their interactions. It serves as a foundation for much of modern science, enabling us to classify and predict the behavior of different substances. Whether in academic research, practical applications, or everyday life, the importance of the atomic number cannot be overstated.

“原子序数”这一概念是化学和物理学领域的基础。它指的是原子核中所含质子的数量，这最终决定了元素的身份。例如，氢的“原子序数”为1，意味着它有一个质子，而碳的“原子序数”为6，表示其核中有六个质子。这个简单而强大的理念使科学家能够在周期表中对元素进行分类，从而促进我们对化学行为和反应的理解。“原子序数”不仅定义了元素的类型，还影响其性质。同样“原子序数”的元素共享相似的化学行为。例如，周期表第一组的所有元素，如锂、钠和钾，在其最外层电子壳中都有一个电子。这种共同性源于它们相同的“原子序数”，导致了类似的反应模式。此外，“原子序数”在决定围绕核的电子排列方面也扮演着至关重要的角色。在一个中性原子中，电子的数量等于“原子序数”，这支配着原子之间如何结合。理解“原子序数”、电子排布和化学键合之间的关系对于预测不同物质在各种条件下的相互作用至关重要。在实际应用中，“原子序数”也为医学和工程等领域提供了重要信息。例如，在医学成像中，某些同位素根据其“原子序数”被使用，以产生更清晰的内部器官图像。在核能中，铀的“原子序数”对于理解其裂变特性至关重要，这些特性被用于发电。此外，“原子序数”有助于同位素的研究。同位素是具有相同“原子序数”但中子数量不同的元素变体。这一区别在考古学等领域中非常重要，其中碳测年依赖于碳同位素的“原子序数”来估算有机材料的年龄。总之，“原子序数”不仅仅是一个数字；它是解锁原子结构和化学性质奥秘的关键。通过理解“原子序数”的重要性，学生和专业人士都可以欣赏到支配物质行为的复杂关系。随着我们继续在原子层面探索宇宙，“原子序数”将始终是科学探究的基石，引导我们走向塑造我们世界的新发现和创新。最后，“原子序数”（“原子序数”）是理解元素及其相互作用的重要概念。它作为现代科学许多研究的基础，使我们能够分类和预测不同物质的行为。无论是在学术研究、实际应用还是日常生活中，“原子序数”的重要性都不容小觑。