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Unit3: Isotopes Review

Quiz by Hugh King

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18 questions
Show answers
  • Q1
    Isotopes are elements of the same type but with a different number of
    Electrons
    Protons
    Neutrons
    120s
  • Q2
    How to you determine the mass number of an element?
    Round the average atomic mass found on the periodic table.
    It is the same as the atomic number found on the periodic table.
    It is the same as the average atomic mass found on the periodic table.
    Round the average atomic number found on the periodic table.
    120s
  • Q3
    What is the mass number of Chromium-52?
    24
    52
    51.99
    24
    120s
  • Q4
    How many protons does Chlorine-35 have?
    18
    35.45
    17
    35
    120s
  • Q5
    What determines the identity of an element?
    Number of Protons
    Number of Electrons
    Number of Neutrons
    120s
  • Q6
    What does the number next to the name of the isotope tell about the isotope?
    The average atomic mass of the isotope.
    The mass number of the isotope.
    The number of neutrons of the isotope.
    The number of protons of the isotope.
    120s
  • Q7
    To determine which isotope of an element is the most abundant, you would...
    round the average atomic mass
    round the atomic number
    determine the number of protons
    subtract the protons from the neutrons
    120s
  • Q8
    Sodium has 11 protons, therefore how many electrons does it have if it is neutral?
    11
    23.5
    24
    23
    120s
  • Q9
    The first steps in determining the average atomic mass is to
    divide the percent natural abundance by 100.
    multiply the percent natural abundance by 100.
    add molar masses together
    multiply the molar mass by the percent natural abundance
    120s
  • Q10
    The difference in the mass of isotopes is due to the difference in the number of
    valence electrons
    neutrons
    protons
    electrons
    120s
  • Q11
    Isotopes of the same element will have a different
    number of electrons
    number of protons
    mass number
    average atomic mass
    120s
  • Q12
    If Francium has an average atomic mass of 223.0, is Francium-220 the most abundant element?
    Yes
    I don't know
    No
    Maybe
    120s
  • Q13
    How many protons does Francium have?
    223.0
    87
    223
    136
    120s
  • Q14
    What is the mass number of Francium?
    223.0
    136
    87
    223
    120s
  • Q15
    How many neutrons does Francium have?
    87
    223.0
    223
    136
    120s

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