Name:  ______________________                                                    date:  _______________

 

ch. 6 & 13 atomic & electronic structure    test  [100 points]                Chemistry

 

 

1.  fill-in the below table.  [22 points]

 

 

symbol

# protons

# neutrons

mass #

# electrons

charge

43Ca2+

 

 

 

 

 

 

16

 

30

 

-2

 

 

15

28

 

3

 

 

2.  fill-in the below table.  label & show your work, including equation / formula used, units in your work / answer, and circle your answer.  [30 points]

 

energy

frequency

wavelength

2.00 * 10 - 20 J

a.

b.

c.

5.00 * 1015 Hz

d.

e.

f.

255 nm

 

 


3.  find the average atomic mass based on the following (hypothetical) data.  show your work, including equation / formula used, proper units in your work / answer, circle your answer, and have the correct # significant figures in your answer.  [15 points]

 

 

atomic mass (amu)

% abundance

45Ca

44.983

3.00

40Ca

39.971

87.00

38Ca

37.897

 ?

 

 

 

4.  provide the electron configuration or orbital diagram (as requested; in order of ascending energy level) of the following atoms.  no "short-cut".  [30 points]

 

a.  nitrogen  [draw orbital diagram]

 

 

 

b.  sodium [write electron configuration]

 

 

 

c.  sulfur  [write electron configuration]

 

 

 

5.  describe the shape of the s-orbital.  [3 points]


 

&nbdbns