Ch. 11 & 12  atomic theory & bonds    test  [70 points]                   Chem

 

For problems involving calculations, show your work in an organized manner, include any relevant equation (or formula and conversion factor(s)), put the proper units in your calculations / answer, and have the proper number of significant figures in your answer.                  Clearly identify the problems done and do them in sequence and your answer must begin and end on the same page of paper; otherwise, you may lose points.

 

1. Using the short-cut notation, what is the electron configuration and orbital diagram for __ ?  [10 points]

a.  Sulfur, S

b.  Antimony, Sb

2.  Sketch the __ AO;  include / label the appropriate axis; i.e. x-, y-, z- axis, to be able to observe the orientation of the AO with respect to these axis; do not include extraneous axis.  [weekly quiz problem;  10 points]

a.  px

b.  dxy

3.  Describe and rationalize the periodic trend in the atomic size in a row of the periodic table.  [10 points]

4.  Draw all valid Lewis structure(s) of (hypothetical ?) __.  [15 points]

a.  PO3 -  

 

b. Sulfur tetrachloride

c.  water


5. Based on the preceding answers, using VSEPR, sketch the shape of the molecule, name of the molecule’s shape, and its bond angle(s).  [15 points]

 

6.   Describe valence bond theory; including type of chemical bond involved, the basis of the bond in the context of the role of valence electrons and the nucleus.   [weekly quiz question; 10 points]