Atomic mass vs mass number
[DOCX File]Atomic Structure - St. Johns County School District
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A mass spectrum can report the data from a mass spectrometer on an intensity vs. mass graph or a percent abundance vs. mass graph. Explain the difference between these two graphs. Below is the mass spectrum of zirconium (Zr). Determine the average atomic mass of Zr. Justify with calculations.
[DOC File]Chemistry Midterm Exam Review
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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]Chapter 22 Worksheet #2 Name
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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.
Difference Between Mass Number and Atomic Mass
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.
[DOC File]Topic List for Atomic Structure Unit
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atomic radius. The graph should have the atomic number on the x-axis and atomic radius on the y-axis. Answer the questions about this graph and what conclusions you would draw. Results. Atomic Mass vs. Atomic Number. S. ee graph attached at the end of the lab write-up. 1. What is the trend as you move down a group (column)? 2.
[DOC File]Trends in the Periodic Table
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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
[DOCX File]Unit 1: FR CW/HW - In progress.docx
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# neutrons = mass # - atomic # The number of protons determines the identity of the element, but it’s an atom’s electrons (valence) which determine the chemical properties of the element. Isotopic Notation. Type I Protons Neutrons Electrons. Carbon-14 6 8 6. Carbon-13 6 7 6. Oxygen-15 8 7 8.
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