Atomic structure

Atomic structure Quiz

IB MYP Sciences: Quiz

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5 questions, one answer each

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  1. 1. Which particle has no electrical charge?

    • A. Neutron
    • B. Proton
    • C. Electron
    • D. Ion

  2. 2. A magnesium atom has atomic number 12 and mass number 24. How many neutrons does it have?

    • A. 24
    • B. 36
    • C. 12
    • D. 0

  3. 3. How many electrons are in an oxide ion, O²⁻, if an oxygen atom has atomic number 8?

    • A. 6
    • B. 10
    • C. 8
    • D. 16

  4. 4. Isotopes of an element have different numbers of which particle?

    • A. Protons
    • B. Electrons
    • C. Shells
    • D. Neutrons

  5. 5. Why is the relative atomic mass of chlorine 35.5?

    • A. A chlorine atom has 35.5 protons
    • B. Its atoms contain half a neutron
    • C. It is the average of the chlorine isotopes, based on how much of each there is
    • D. Electrons add extra mass

Quiz