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

 

 

Academic Honesty:   The answers on this test are my own and I am using only the allowed set of notes as described in the syllabus.  I have not discussed the test questions with anyone before or during the test nor have I seen the test questions prior to the exam.  If you violate any of the preceding items or do not sign, your semester grade is a F.

 

                                                                                                Signature:  ___________________

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

a. Sulfur

b.  Antimony

 

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.  [weekly quiz problem;  10 points]

a. px

 

b. dxy

 


3. Describe and rationalize the periodic trend in the first ionization energy 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.  NH


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]

a.  PO3 -

 

b. Sulfur tetrachloride

 

c. NH

 

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.  [10 points]