Mass number vs atomic mass
[DOC File]Topic List for Atomic Structure Unit
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Knowledge of mass number and atomic number. Atomic symbols including mass number, atomic number, and charge. Vocabulary: • Fission • Fusion • Transmutation • Nuclide. Information: Transmutation is the transformation of the nucleus of an atom so that the atom is changed from one element into a different element.
[DOC File]Unit 2: Atomic Concepts and Periodic Table (Level 1)
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Average Atomic Mass = ([(isotope mass)(percent abundance)] To solve for percent abundance assign the first isotope x and the second isotope equal to 100% - x. There are two naturally occurring isotopes of rubidium: 85Rb, which has a mass of 84.91 amu and 87Rb, which has a mass of 86.92 amu. The atomic mass of rubidium is 85.47 amu.
[DOC File]Chapter 22 Worksheet #2 Name
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9. Define –(a) Average atomic mass (b) Molecular mass (c) Formula mass . 10. Express the following in the scientific notation with 2 significant figures- (a) 0.0048 (b) 234,000 (c) 200.0 . 11. Calculate the number of atoms in each of the following (i) 52 moles of Ar (ii) 52 u of He (iii) 52 g of He . Ans. (i)
[DOC File]Chemistry II-AP
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of an atom. The protons have a mass of approximately . ONE AMU. The number of protons in the nucleus, also called the . ATOMIC NUMBER, is responsible for determining the type of atom, or the . ELEMENT. The . NEUTRONS. are also in the nucleus with the protons, together their sum is the . MASS NUMBER. Neutrons are almost equal in mass to the ...
Difference Between Mass Number and Atomic Mass
Atomic Theory Timeline. Atomic number (Z#) vs. Mass number (A#) identification of element. percent abundance of isotopes. difference between isotopes and nuclides. nucleons. contrast of nuclear size & density vs. atomic size & density (atomic size ~ 10-8 cm vs. atomic nucleus ~ 10-13 cm) (atomic density - ex. for Fe = 7.9 g/cm3; nuclear density ...
[DOCX File]Atomic Structure - St. Johns County School District
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Atomic number = number of protons = number of electrons (for a neutral atom) Mass number = # protons + # neutrons. Atomic mass = weighted average mass of the isotopes of that element. Average atomic mass calculations. Mass % abundance. See sample calculations. Radioactivity. Spontaneous emission of radiation by certain atoms. The structure of atomic nuclei and the changes …
[DOC File]Chemistry Midterm Exam Review
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Electron: negative charge, very tiny and speeding randomly in cloud around nucleus, determines the atom’s charge and reactivity, not part of the atomic or mass numbers. (e-) Mass is ~ 1 1840 of a proton/neutron and thus is considered to have 0 amu and mass of 9.11∙10-28 g
[DOC File]STUDY GUIDE - ATOMIC SRTUCTURE/_CLASSIFICATION OF …
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A plot of binding energy per nucleon vs. mass number shows that the most stable nuclei occur around A = 50 to 60. Fe 56 is the most stable nucleus in the universe. The existence of a maximum in this curve indicates that energy is released in either a fission or fusion process in which more stable nuclei (i.e., closer to 56Fe) are produced.
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