The atomic number (原子序数) is equal to the number of electrons per atom or, what is equivalent, the number of protons (质子) per nucleus.相关知识点: 阅读 文言文阅读 文言题类 文言文阅读——翻译 试题来源: 解析 [答案]原子序数等于每个原子的电子数或者相当于每个原子核的质子数。
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If you know the atomic number and the mass number of an isotope of an element, how can you determine the number of protons and neutrons? Answer and Explanation: The atomic number is equal to the number of protons in an atom. For ...
The atomic number(原子序数)is equal to the number of electrons per atom or, what is equivalent, the number of protons per nucleus(原子核).暂无答案更多“The atomic number(原子序数)is equal to the number of electrons per atom or, what is equivalent, the numb…”相关的问题 第1题 The fol...
THEATOMICNUMBER>列表1 题目:The atomic number (原子序数) is equal to the number of electrons per atom or, what is equivalent, the number of protons (质子) per nucleus.免费查看参考答案及解析 1共1条数据 类目题库● 中西医结合助理医师 ● 土木工程建筑技能考试 ● 建筑继续教育 ● 口腔助理...
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The atomic weight of an atom, or the molecular weight of a molecule, is its mass relative to that ofa___ atom. This is essentially equal to the number of protons plus neutrons that the atom or molecule contains. A oxygen B hydrogen C helium D carbon 相关知识点: 试题来源: 解析 B ...
The element with the atomic number 1 is ___. A. hydrogen B. helium C. lithium D. beryllium 相关知识点: 试题来源: 解析 A。原子序数为 1 的元素是氢,选项 B 氦的原子序数不是 1,选项 C 锂的原子序数不是 1,选项 D 铍的原子序数不是 1,所以选 A。
What is the atomic number determined by in English? A. The number of protons B. The number of neutrons C. The number of electrons D. The sum of protons and neutrons 相关知识点: 试题来源: 解析 A。原子序数由质子数决定。选项 A 正确,原子序数等于质子数。选项 B 中子数不能决定原子序数。
The main difference between isotopes of an element is in their: A. Atomic number B. Mass number C. Electron configuration D. Chemical properties 相关知识点: 试题来源: 解析 B。同位素之间的主要区别在于质量数。原子序数决定元素种类,同位素的原子序数相同,所以 A 选项错误。电子构型在同位素中基本相同,...