【答案】(a)Electron(b)Neutron(c)①Thenumberofprotonsisnotequaltothenumberofneutrons.②Thenumberofelectronsisnotequaltothenumberofprotons.③Thetotalnumberofparticlesisnot 20.④Thenumberofneutronsisnotequaltotheatomicnumber.【解析】(a)原子的质子数等于原子序数,题目中要求的是质量最小的粒子,所以是电子,故...
To differentiate between the atoms on the basis of protons and neutrons, the atomic number and mass number were introduced. The atomic number is the number of the protons in the atom, denoted by Z. The mass number is the total number of protons and neutrons in ...
7 Which isotope is used as the standard in the definition of relative atomic mass?□A$$ ^ { 1 } H $$ B□B$$ ^ { 1 2 } C $$□C$$ ^ { 1 3 } C $$□D$$ ^ { 1 6 } O $$ 相关知识点: 试题来源: 解析 B 反馈 收藏 ...
Given that the mass of a particle is 4.00151 amu. What is the binding energy of an a particle (a _4 He nucleus)? (in Me V) When Boron 5B10 bombarded by neutron, \alpha-particles are emitted. What mass number has the resulting nucleus?
nuclei with mass number 59 to 89statistical models (nuclear)/ radiative strength functionsnucleimagic numberprotons numberradiative strength distributionstatistical approachThe distribution of the radiative strength in nuclei where the number of nucleons of one type is nearly magic ( Z =28卤1) and ...
14 Which statement about atoms and molecules is correct? I A The molecular formul a of a compound is the simplest whole number ratio of atoms of each element in the compound. B One mole of any substance contains 6 ×$$ 1 0 ^ { 2 3 } $$ atoms. C The relative atomic mass of an...
1. Understand Atomic Structure: - An atom consists of protons, neutrons, and electrons. - The atomic number (Z) represents the number of protons in the nucleus. - The mass number (A) is the total number of protons and neutrons in the nucleus. 2. Formula for Neutrons: - The number of...
T(A) the number of molecules in 1 gm H_p} is greater than the number of molecules in 1 gm CO_{2}(B) the number of atoms in 1 gm of an element is not equal to the number of atoms in 1 gm atom of element(C) the modern atomic mass unit is based on the mass of 12 C ...
According to Thomson model of atom, mass of the atom is concentrated in the centre of the atom. Reason. According to Thomson model, positive charge is concentrated in the centre of the atom View Solution Consider an atom with atomic number Z as consisting of a positive point charge at ...
What subatomic particle has a mass of one atomic mass unit? a. proton b. neutron c. electron d. more than one of the above What is the atomic mass of an atom that has 9 protons, 9 electrons, and 9 neutrons? State how the atomic number and mass number can b...