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Periodic Table - Test 3


1. Silicon:

    A. has four valence electrons in the atom
    B. forms long chains by linking silicon atom to silicon atom, as does carbon
    C. forms a basic oxide
    D. is found in the free condition in nature


2. The lowest ionization energies are found in the:

    A. inert gases
    B. alkali metals
    C. transition elements
    D. halogens


3. Which one of the following elements would you expect to have the least affinity for an electron?

    A. bromine
    B. arsenic
    C. selenium
    D. potassium


4. Mercury is used in barometers because of its:

    A. good electrical conductivity
    B. high density
    C. high thermal conductivity
    D. low reactivity


5. Hard water is due to the presence of any of the following ions except:

    A. sodium
    B. calcium
    C. magnesium
    D. iron


6. Lithium readily reacts with all of the following except:

    A. oxygen
    B. water
    C. the halogens
    D. helium


7. Chlorine is more active than iodine. This is probably because:

    A. chlorine loses electrons more readily than does iodine
    B. the incomplete shell in the chlorine atom is closer to the nucleus
    C. iodine adds electrons more readily than chlorine
    D. the valence electron of Chlorine is remote


8. A gas commonly used in electric light bulbs to retard vaporization of the filament is:

    A. neon
    B. helium
    C. oxygen
    D. argon


9. Of the outermost electrons of the noble inert gases, it is true that:

    A. all are in filled p orbitals
    B. all are paired
    C. they complete a principal energy level
    D. all are very difficult to remove from the atom


10. An element in the same chemical family as potassium is:

    A. copper
    B. helium
    C. lithium
    D. zinc






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