分子间作用力-1-Dipole Dipole Forces of Attraction - 偶极偶极 781 -- 11:42 App 原子理论-3-Law of Multiple Proportions 倍比定律及练习 57 -- 6:26 App 化学计量学-8- Percent Error 误差的计算 64 -- 23:15 App 气体-13-Daltons Law of Partial Pressure 118 -- 5:57 App 电子排布-4-El...
1. The number of protons plus the number of neutrons is the element's ___ 2. An atom or molecule that has lost or gained an electron is called a (n) ___ 3. A(n) ___ describes an atom that has lost one or more electrons is called a (n) ___ Classification ...
If you are given the atomic weight of an atom, you need to subtract the number of neutrons to get the number of protons. Sometimes you can tell the elemental identity of a sample if all you have is the atomic weight. For example, if you have a sample with an atomic weight of 2, y...
It is important to keep track of these different symbols. What is the difference between a mass number and an atomic number? Atomic number is the number of protons an atom has in its nucleus. Mass number is the number of protons PLUS the number of neutrons in its nucleus and is ...
Isotopes of a chemical element are atoms with the same numbers of protons, but different numbers of neutrons. The number of protons is determined from the element's atomic number in the periodic table. The numbers of neutrons differ by one or more. P...
The number of protons contained in the nucleus of an atom is called the atomic number (Z) and the number of neutrons is the neutron number (N). Because the masses of these particles are each approximately equal to one mass unit, the total number of protons plus neutrons is called the ...
百度试题 结果1 题目4 In which atom is the number of protons equal to the number of neutrons? D A 40Ar B 19 F C 23Na D 16O 相关知识点: 试题来源: 解析 D 反馈 收藏
The number of protons contained in the nucleus of an atom is called the atomic number ( Z ) and the number of neutrons is the neutron number ( N ). Because the masses of these particles are each approximately equal to one mass unit, the total number of protons plus neutrons is called ...
百度试题 结果1 题目The total number of protons and neutrons in an atom is calledA.the atomic numberB.the proton numberC.the mass numberD.the neutron number 相关知识点: 试题来源: 解析 C 反馈 收藏
The atomic number of an atom is:A.the number of electronsB.the number of neutronsC.the number of protonsD.the number of protons plus the number of neutrons的答案是什么.用刷刷题APP,拍照搜索答疑.刷刷题(shuashuati.com)是专业的大学职业搜题找答案,刷题练习的工