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元素和原子都是重要的化学基本概念,明确其含义和它们的区别、联系及使用范围,对正确理解和描述物质的组成与构成很有必要. 一、元素和原子的概念辨析元素是具有相同核电荷数(即核内质子数)的一类原子的总称.这里的“总称”有两种含义:①是众多原子的集体,这表明元素是宏观的概括;②对于原子是不是从属于某元素,是不是某元素的原子,只需考虑核电荷数即质子数而不必考虑中子数,如:11H、12H(D)、13H(T)为三种不同的原子,但它们均属于同一类原子(氢
Elements and atoms are important basic concepts of chemistry. The definition of their meanings and their differences, connections, and scope of use are necessary for the correct understanding and description of the composition and composition of matter. First, the elements of the concept of element and atom analysis are the same The general term for the number of nuclear charges (ie, the number of protons in the nucleus). Here the “general term” has two meanings: 1 is the collective of numerous atoms, which indicates that the elements are macroscopic summaries; The element, is not an atom of an element, only need to consider the nuclear charge number or proton number without having to consider the number of neutrons, such as: 11H, 12H(D), 13H(T) are three different atoms, but they all belong to the same Class atoms (hydrogen