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Atomic Structure & Isotopes

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Chemistry
•
9th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
the number of protons and neutrons
2.
FLASHCARD QUESTION
Front
Approximate mass of an atom with 26 protons, 26 electrons, and 19 neutrons?
Back
45 amu
3.
FLASHCARD QUESTION
Front
Which two notations represent isotopes of the same element?
Back
4.
FLASHCARD QUESTION
Front
Which numerical setup can be used to determine the atomic mass of lithium?
Options: (7.5)(6.02 amu) + (92.5)(7.02 amu) , (0.925)(6.02 amu) + (0.075)(7.02 amu) , (0.075)(6.02 amu) + (0.925)(7.02 amu) , (92.5)(6.02 amu) + (7.5)(7.02 amu)
Back
(0.075)(6.02 amu) + (0.925)(7.02 amu)
5.
FLASHCARD QUESTION
Front
Two atoms that are different isotopes of the same element have:
Back
the same number of protons but a different number of neutrons
6.
FLASHCARD QUESTION
Front
the mass of an electron is
Back
less than the mass of a neutron
7.
FLASHCARD QUESTION
Front
Which notations represent atoms that have the same number of protons but a different number of neutrons? Options: H-2 and He-3, S-32 and S-32, Cl-35 and Cl-37, Ga-70 and Ge-73
Back
Cl-35 and Cl-37
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