Atomic numbers by element
[DOC File]Periodic Table Worksheet
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The most active element in Group 17 is _____. What sublevels are filling across the Transition Elements? _____. Elements within a group have a similar number of _____. Elements across a series have the same number of _____.
[DOC File]Name
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What statement can you make about the relationship between atomic numbers and radioactivity? Directions: The atomic number of uranium is 92. The most stable isotope of uranium is uranium-238. The radioactive isotope of uranium is uranium-235. In the spaces provided, write the symbols for the nucleus of each isotope of uranium. Uranium-238 ...
[DOC File]Atom Worksheet
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Example for carbon: Atomic mass: 12 (rounded) Number of neutrons: 12 – 6 = 6. To find the number of electrons, look at the atomic number: Example for carbon: Atomic number: 6 Number of electrons: 6 *Complete the table for the elements with atomic numbers 1-10. ELEMENT. NAME ATOMIC NUMBER ATOMIC MASS PROTONS NEUTRONS ELECTRONS Hydrogen
[DOC File]Chapter 2 Sections 1 & 2: Atomic Structure and Subatomic ...
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An atom of an element has 55 electrons and 29 neutrons. Identify this element. Complete Symbol. We represent the complete symbol of an element in the form of AZX, where A is the mass number, Z is the atomic number, and X is the symbol of the element. Example: 1. Given the fact that there are 12 neutrons in sodium, the complete symbol for sodium ...
[DOC File]Atomic Numbers Practice #1
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Element Nuc. symbol Electrons Protons Neutrons Isotope Symbol Atomic Number Mass Number Xenon 133 Iodine 73 50 70 79 200 80 200 11 11 8) Copper has 2 main isotopes, Cu-63 and Cu-65. Look up copper's atomic mass on the periodic table.
[DOC File]Day 1: Atomic Structure (The Nucleus)
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Artificial transmutation Changing one element into another by bombarding it with particle bullets in a particle accelerator. Atomic Mass Unit (amu) 1/12 the mass of a C-12 atom, the approximate mass of protons and neutrons. Atomic number The number that identifies an element…
[DOC File]HONORS CHEMISTRY - MIDTERM REVIEW
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a. atomic masses b. atomic numbers c. atomic radii d. number of electrons. 23. What is the total charge on anion that contains 10 electrons, 13 protons, and 15 neutrons? a. -1 b. +1 c. -3 d. +3. 24. The element whose properties are most similar to those of tellurium is. a. Be b. O c. S d. Po. 25. How many electrons are in a neutral atom of Li ...
[DOC File]Isotope Practice Worksheet
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The element is: Carbon. The number 6 refers to the atomic #, # of protons. The numbers 12, 13, and 14 refer to the mass number. How many protons and neutrons are in the first isotope? 6p, 6n. How many protons and neutrons are in the second isotope? 6p, 7n.
[DOC File]Chemistry Midterm Exam Review
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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.
[DOC File]Name
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Atomic Mass The atomic mass of an atom is its actual mass, based on the actual number of each type of subatomic particle it contains. The atomic mass of an element is a weighted average of the mass of the isotopes of the element. Atomic mass is measured in atomic mass units (amu), which is based on the mass of a carbon-12 atom.
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