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...
Atomic number (the number of protons in the nucleus), not atomic mass number (the number of protons and neutrons), determines chemical behavior. 是原子序数(原子核中质子的数量)而不是原子的质量决定化学特性。 全句 We now know that atomic number (the number of protons in the nucleus), not...
since an atom cannot have a fractional number of protons. What is the difference between an atomic number and a mass number? The "atomic number" of an atom is equal to the number of protons it contains. The "mass number" or "atomic mass" of an atom is the sum of the number of ...
Atomic number is the number of protons in an atom's nucleus. It is the same for all atoms of a given element. What is the atomic number? The atomic number of a given element is the number of protons contained in the nucleus of an atom of that element. Is mass number A or Z?
What is the atomic mass of an electron? What is the atomic mass number of carbon-13? If an atom has an atomic number of 8, how many protons will it have? What is darmstadtium's atomic mass? What is effective atomic number? Is the atomic number equal to the number of ...
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...
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
Since atomic number is the number of protons in anatomand atomic mass is the mass of protons, neutrons, and electrons in an atom, it seems intuitively obvious that increasing the number of protons would increase the atomic mass. However, if you look at the atomic masses on aperiodic table,...
Atomic Number and Protons דוגמאות Atomic Number and Protons Each element has a unique atomic number equal to the number of protons: Hydrogen has atomic number 1; every H atom has one proton. Carbon has atomic number 6; every C atom has six protons. Copper has atomic nu...
Atomic number = number of protons # protons = # electrons IN NEUTRAL ATOMS. Today in Physical Science Chemistry: Inside the Atom Chapter 3 Part 2. How Atoms Differ Atoms differ in the number of protons they have. – Oxygen has 8 Protons, Fluorine 9 Protons, ...