Ch. 11  AO, electron configuration, & periodic trends            40 points                                  Chemistry

 Write the electron configuration for  ___; may not use the Nobel gas “short-cut notation”.  [10 points]

a. Calcium:  _____________________________

b. Arsenic:  _____________________________

2. Sketch the orbital diagram for  __; may use the Nobel gas “short-cut notation”.  [10 points]

a. Phosphorus:

b. Tin: 

3. Sketch the atomic orbital for  ___; include / label x-, y-, and / or z- axis  as needed to see the atomic orbital’s orientation with  respect to these axis.  [10 points]

a. p y

b. d x z

4. What is the periodic trend __ ?  Justify / rationalize your answer.  [10 points]

a.  in the size of an atom from the top to the bottom in a column in the periodic table

b. in the ionization energy from the left to the right in a row of the periodic table