The atomic number is the number of protons found in the atom. It usually identifies the element itself, since it's unique to the specific element. Every element have different atomic number. The periodic table is arranged accordingly to the atomic number from low to high. ...
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。选项 C 电子数在原子呈电中性时等于质子数,但不是决定原...
百度试题 结果1 题目The atomic number of an element represents the number of ___. A. protons B. neutrons C. electrons D. protons and neutrons 相关知识点: 试题来源: 解析 A。元素的原子序数代表质子数(protons)。反馈 收藏
*Atomic number: The atomic number is the total number of protons possessed by an atom's nucleus. The atomic number is responsible for the...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your tough homework...
___分析的方法。当我们做某项活动时，我们期望从中获益并且识别出与之相关的___成本。___是指多做一点带来的收益；___是指多做一点带来的成本。尽管边际成本可能是常数，但通常不是。更典型的是，当我们增加一单位某活动时，这额外一单位的成本可能会___...
To find the relationship between the mass number (A), atomic number (Z), and the number of neutrons (N), we can follow these steps:1. Understanding Definitions: - The mass number (A) is the total number of p
A. the number of protons in an atom B. the number of neutrons in an atom C. the number of electrons in an atom D. the total number of particles in an atom 相关知识点: 试题来源: 解析 A。元素的原子序数告诉我们一个原子中的质子数。原子序数等于质子数,选项 B 中子数不能由原子序数确...
1.how are the atomic numbers and the atomic masses of the elements related to how the elements are arranged on the periodic table?2.how does the number of electrons relate to the arrangement ?what is the different in the number of electrons in a 3rd period element and the 2nd period ...
Atomic number and mass number differ in that atomic number is the number of and mass number is in an atom's nucleus. a. protons; the number of neutrons b. neutrons; the number of protons c. protons; the number of electrons d. protons; the s...
.The elements in a period all have the same number of shells (so the shielding effect is the same). .This means that as you go across the period the nucleus attracts the electrons more strongly pulling them closerto thenucleus. ·Because of this, the atomic radius (and thus the size of...