CHM 1020 Chapter Three (Sample)             Name:___Answers_____

 

Chapter Three (M-3) Part P: Periodic Chart Identification     15 points

Selected symbols have been placed into the following blank periodic table of elements:

Which symbol in the above periodic table fits the following description?

__K___1. an alkali metal

 

__F___2. A halogen

 

__Sr___3. an alkaline earth element (also Be)

 

__Ar___4. a noble gas

 

__Sn___5. A representative element in the fifth period

 

__As___6. a semimetal

 

__Pm___7. An element in the lanthanide series

 

__Al___8.  an element with the atomic number 13

 

__Hg___9. an element filling  a 5d sublevel

 

__Se___10. an element with six valence electrons

 

__Co___11. an element corresponding to: 1s2 2s2 2p6 3s2 3p6 4s2 3d7

 

__Sn___12. an element with four valence electrons

 

__Pu___13. an element in the actinide series

 

__H___14. the main isotope of this element has zero neutrons in the nucleus

 

__H___15. a representative element in the first period of the periodic table