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7 questions
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  • Q1
    What is the charge of a proton?
    -1
    +2
    0
    +1
    30s
  • Q2
    What is the charge of an electron?
    0
    -2
    +1
    -1
    30s
  • Q3
    What is the mass of a neutron?
    2
    0
    1/2
    1
    30s
  • Q4
    What is the atomic number of carbon?
    8
    4
    12
    6
    30s
  • Q5
    What is the maximum number of electrons that can be held in the first energy level of an atom?
    6
    8
    4
    2
    30s
  • Q6
    What is the maximum number of electrons that can be held in the second energy level of an atom?
    2
    4
    8
    6
    30s
  • Q7
    What is the mass number of an atom with 8 protons and 9 neutrons?
    9
    18
    8
    17
    30s

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