B) Protons and electronsC) Electrons and neutronsD)Electrons, protons, and neutronsAnswer: A 相关知识点: 试题来源: 解析 A 选项A中的质子和中子位于原子核内,构成了原子的主要质量,而电子的质量极小,可忽略不计。原子质量数即质子数与中子数之和。选项B和C错误地包含了电子,而选项D虽然所有粒子都包含,...
The atomic mass of the element is determined by the combined masses of neutrons and protons. True or false? Explain.Answer and Explanation: The atomic mass or atomic weight of an element (or put it in simple term, mass of an atom) is found by...
The atomic number is the number of protons in an atom and the mass number is the number of protons plus the number of neutrons. The atomic number is... Learn more about this topic: Atomic & Mass Number | Overview & Difference from ...
The mass number of argon is 40.How many protons, neutrons and electrons are there in an argon atom? ( ) 相关知识点: 试题来源: 解析 一个氩原子有 18 个质子、22 个中子和 18 个电子。 1. 原子序数: 氩的原子序数为 18,这意味着它的原子核中有 18 个质子。 2. 质量数: 氩的质量数为 40...
Beta decay, the primary mechanism for radioactive decay in unstable isotopes, involves the transformation of neutrons into protons (beta-minus decay) or protons into neutrons (beta-plus decay), with the emission of electrons, positrons, neutrinos, or antineutrinos. Additionally, rare and theoretical...
The sum of an atom's protons and neutrons is its What nuclide has 27 protons and 33 neutrons? The atomic mass is equal to: A. the number of neutrons. B. the number of protons plus the number of electrons. C. the number of protons plus the number of neutrons. D. the number of el...
Number of neutrons = 20 Explanation of Solution Given,1939X Atomic number,Z =19 Mass number,A =39 The atomic number of the element is equal to the number of protons. The mass number is equal to the sum of the number of protons and neutro...
(atomic mass)= no . of protons + no .of neutrons . Z (atomic number) is same as the protons and electrons . Nuclear stability: The nucleus is composed of protons and neutrons. The strongest nuclear force binds the particles tightly. Though the pr...
(hadrons) such as protons and neutrons (Greiner et al.2007). The culmination of all non-gravitational forces into a single quantum field framework is the standard model of particle physics (Sect.4.2, especially the Higgs mechanism seen in Sects.4.2.1,4.3and4.4). Yes, those were the days,...
Everyone learns about Helium in school. It is the second element in the periodic table having 2 protons, 2 neutrons and 2 electrons - having anatomic mass of 4. But another form of Helium has been in the news lately and it is called Helium-3. Helium-3, also written as3He, is a lig...