Mr Falk's Quiz

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1. Which of these elements has the lowest relative atomic mass?

    Hydrogen
    Helium
    Sodium
    Chlorine

2. How many electrons can the first energy level of an atom contain?

    4
    8
    2
    0

3. Which component of an atom does not have an electrical charge?

    electron
    neutron
    proton
    nucleus

4. Which of the following electronic configurations represent the atom sodium

    2,1
    2,8,7
    2,8,2
    2,8,1

5. Which of these definitions describes an isotope?

    The same chemical elements with different numbers of neutrons
    The same chemical elements with different numbers of protons
    A type of energy drink
    all of the above