Ch. 11, 12, & 14  atomic orbitals, bonds, & IMF  test   [70 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:  ___________________

 

1.  sketch the orbital diagram of phosphorus.  [5 points]

 

2.  sketch px & py atomic orbitals; include / label the x-, y-, or z- axis.  [10 points]

 

3.  describe and rationalize the periodic trend in the size of an atom in a row of the periodic table.  [10 points]


4.  Using Lewis symbols and the Octet rule, describe the chemical bond in __; identify the type of bond in each molecule.   [10 points]

a.  potassium fluoride

b.  fluorine gas

 

5.  Draw the Lewis structure(s) of __.  [10 points]

a.  PH3

b.  nitrate ion


6.    sketch the shape of the molecule, the name of the shape of the molecule, and bond angle in  ___.  hint:  see # 5   [10 points]

a.  PH3

b.  nitrate ion

 

7.  In regards to water and carbon dioxide,    [15 points]

a.  is it a polar or nonpolar compound ?  Justify your answer.

b.  identify the type of IMF in each molecule.  Justify your answer.

c.  which molecule has the highest vapor pressure ?  Justify your answer.