百度试题 结果1 题目What is the atomic number of an element?ps:Please answered in English 相关知识点: 试题来源: 解析 最佳答案译文,什么是元素的原子序数?It is the number of an element in thePeriodic table of the elements.
atomic number- the order of an element in Mendeleyev's table of the elements; equal to the number of protons in the nucleus or electrons in the neutral state of an atom of an element number- a concept of quantity involving zero and units; "every number has a unique position in the sequ...
What does the atomic number of an element tell you about the element? Structure of Atom: An atom comprises of a very tiny and dense particle called nucleus, which carries the protons and neutrons in it, while electrons are found in the orbit of suitable quantum number surrounding...
The meaning of ATOMIC NUMBER is an experimentally determined number characteristic of a chemical element that represents the number of protons in the nucleus which in a neutral atom equals the number of electrons outside the nucleus and that determines t
Not all the atoms of an element need have the same number of neutrons in their nuclei. In fact, it is precisely the variation in the number of neutrons in the nuclei of atoms that gives rise to isotopes. Hydrogen is a case in point. It has the atomic number 1. Three nuclei with one...
Atomic number definition: the number of positive charges or protons in the nucleus of an atom of a given element, and therefore also the number of electrons normally surrounding the nucleus. Abbreviation: at. no.; Symbol. See examples of ATOMIC NUMBER us
英 na.【化】原子序数 网络原子数;原子序号;原子量 复数:atomic numbers 权威英汉双解 英汉 英英 网络释义 atomic-number n. 1. 原子序数(指原子在元素周期表中的序号)the number of protons in the nucleus (= centre) of an atom, which is characteristic of a chemical element. Elements are placed in...
in an atom is often-but not always-thesame.Every element has a different number of protons.This helps make it differentfrom another element.An element's atomic number is the same as its number ofprotons.For example,hydrogen has only 1 proton.So this means thatit has an atomic number of ...
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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,...