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Periodic Table
Questionarium
 

 

    1. The chemical symbol Cr is:
 
carbon   chromium   cobalt

 

    2. The element Barium (Ba) belongs to the group:
 

metallic   non-metallic  
none

 

    3. The only oxidation number for aluminium is:
 

+3   +1   -3

 

    4. The atomic number is:
 

the number of electrons and protons in the atom nucleus   the number of protons in the atom nucleus   the number of neutrons and protons in the atom nucleus

 

    5. The mass number is:
 

the total number of neutrons and protons in the atom nucleus   the total number of protons in the atom nucleus   the total number of neutrons in the atom nucleus

 

    6. Which of the following gases are noble: He, Ne, H, Br, Xe e Ru
 

He, Ne, Br and Xe   He, Ne, Xe and H   He, Ne, Xe and Ru

 

    7. Which of the following elements are transition metals: Zn, Cr, Ta, Hg, Al e Cu
 

Zn, Cr, Ta and Cu   Cr, Ta, and Cu   Zn, Hg, Al and Cu

 

    8. The Vanadium is in which column:
 

5A   1A   1B

 
Time:



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