Name:  ______________________________                                                date:  _______

Ch. 6, 7, 8  electronic structure of atom, periodic trends, & chemical bond I    test  [100 points]     AP 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. 

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. Relate the line spectra of an atom with respect to it’s electron energy levels.  [10 points; similar to HW 6.23]

2. The electron energy level in the hydrogen atom is En = - 2.18 * 10 -18 J (1 / n 2)

What is the wavelength of light associated with the transition from the n = 2 to n = 3 electron energy level ?  [15 points; similar to HW 6.27a]

3. Sketch the orbital diagram for arsenic.  [10 points; similar to HW 6.67a]

4.  Sketch the PES spectrum for sulfur; label (i) each peak with its associated atomic orbital, (ii) the vertical- and horizontal- axis, and (iii) the relative area of each peak.  Assume that the magnitude of the value on the horizontal axis increases from left to right.  [10 points; similar to weekly quiz]

5. What is the periodic trend in the first ionization energy in the 4th row in the periodic table ?  include all exceptions; justify / rationalize your answer.  [20 points; weekly quiz question]

6. Determine the unknown [Cu 2+] based on the following hypothetical experimental data

[Cu 2+]  (mM)

Light intensity

blank

660  photons / second

40

220

80

75

120

22

unknown

150

using the below graph paper; label the axis as appropriate and show all appropriate calculations in an organized manner.  [15 points; similar to your Beer’s law prelab]

7. Sketch the Lewis structure of __.  [10 points; similar to HW 8.41]

a. Nitrate ion

b.  Silicon dioxide

8. Use Lewis symbols to represent the reaction between __; identify the type of bond (i.e. ionic or covalent) in the product.  [10 points; similar to HW 8.5]

a. Calcium and chlorine

b.  Hydrogen and oxygen