atomic mass 原子质量 mass number 质量数 前者是多少克，后者是多少个 提示一下你就应该明白了，喝喝
Are Atomic Mass and Atomic Mass Number the Same? Yes and no. If you are talking about a sample of a single isotope of an element, the atomic mass number and the atomic mass are either very close or else the same. In introductory chemistry, it's probably fine to consider them to mean...
1 AtomicTheory AtomsarebuildingblocksofelementsSimilaratomsineachelementDifferentfromatomsofotherelementsTwoormoredifferentatomsbondin simpleratiostoformcompounds LecturePLUSTimberlake 2 SubatomicParticles ParticleElectron Symbole- Charge1- RelativeMass 0 Location outsidenucleus Proton p+ + Neutronn...
1 AtomicTheory AtomsarebuildingblocksofelementsSimilaratomsineachelementDifferentfromatomsofotherelementsTwoormoredifferentatomsbondin simpleratiostoformcompounds LecturePLUSTimberlake 2 SubatomicParticles ParticleElectron Symbole- Charge1- RelativeMass 0 Location outsidenucleus Proton p+ + Neutronn...
Atoms of the same element (same atomic number) with different mass numbers Isotopes of chlorine 35Cl 17 chlorine-35 37Cl 17 chlorine-37 LecturePLUS Timberlake 14 Learning Check Naturally occurring carbon consists of three isotopes, 12C, 13C, and 14C. State the number of protons, neutrons, ...
thenumberofprotonsforatomsofeachofStatethenumberofprotonsforatomsofeachofthefollowing:thefollowing:A.NitrogenA.Nitrogen2)7protons2)7protonsB.SulfurB.Sulfur2)16protons2)16protonsC.BariumC.Barium3)56protons3)56protonsLecturePLUSTimberlake10MassNumberMassNumberCountsthenumberCountsthenumberofofprotonsand...
TheAtomAtomicNumberandMassNumberIsotopes LecturePLUSTimberlake 1 AtomicTheory AtomsarebuildingblocksofelementsSimilaratomsineachelementDifferentfromatomsofotherelementsTwoormoredifferentatomsbondinsimpleratiostoformcompounds LecturePLUSTimberlake2 SubatomicParticles ParticleElectronSymboleCharge1RelativeMass...
Mass number is not shown on the periodic table but is often found when elements are shown as symbol-mass number (such as oxygen-16). What is the difference between atomic mass and atomic number? Atomic mass is the average weighted mass number of all isotopes of a given element. It is ...
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Thus, its mass number is 12. While the number of protons remains the same in all atoms of an element, the number of neutrons can vary. Thus, atoms of the same element can have different mass numbers, and these are called isotopes. The weight of an electron is almost negligible. Thus,...