Q1 (2 marks): Which of the following represents an acceptable possible set of n, l, m_l, and m_squantum numbers
for an electron in an atom?
 

a) 2, 1, -1, 1/2

b) 2, 1, 0, 0

c) 2, 2, 0, 1/2

d) 2, 0, 1, -1/2

e) 2, 0, 2, 1/2

Q2 (2 marks): Which orbital is degenerate with a 5d_z2 in a many-electron atom?

a) 5pz

b) 4dz

c) 5s

d) 5dxy

e) 4dz2

Q3 (2 marks): When an atom is excited, even though the total number of electrons does not change,
the electron configuration is no longer the same as the ground state electron configuration you have learnt to derive.
Which of the following electron configurations corresponds to an excited oxygen atom?

a) 1s2 2s2 2p2

b) 1s2 2s2 2p2 3s2

c) 1s2 2s2 2p1

d) 1s2 2s2 2p4

e) [He] 2s2 2p4

 

Q4 (2 marks): Screening by the core electrons in atom is:
 

a) less efficient than that by valence electrons

b) more efficient than that by the valence electrons

c) essentially identical to that by valence electrons

d) responsible for a general decrease in atomic radius going down the group

e) both essentially identical to that by valence electrons and responsible for a general decrease in atomic radius going down the group

 
 

Q5 (2 marks): Which one gives the correct  order for bonding atomic radius  (from the smallest to the largest)	Q6 (2 marks): Which one gives the correct order for first ionization energy (from the largest to the smallest)
a) O < F < S < Mg < Ba	a) Cl > S > Al > Ar > Si
b) F < O < S< Mg < Ba	b) Ar > Cl > S > Si > Al
c) F < O < S < Ba < Mg	c) Al > Si > S > Cl > Ar
d) O < F < S < Ba < Mg	d) Cl > S > Al > Si > Ar
e) F < S < O < Mg < Ba	e) Ar > Cl > S > Si > Al

 

Provide answers to the remaining questions in the appropriate lines or boxes

Q7 (2 marks) Complete the following sentences: Sulfur is a                         (metal, nonmetal).

It forms a (an)                          (basic, acidic) oxide which, when dissolved in water forms a (an)

                        (base, acid) with the formula of                         and name:                                                 .
 
 

Q8 (3 marks): a) Write the full ground state electron configuration for tungsten:
 

Answer:

b) Which electrons in the above electron configuration are valence electrons?

Answer:

 

Q9 (3 marks): a) Draw orbital diagram (see such orbital diagrams for Zn and Ti on page 214 in BLB) for the
short hand electron configuration of nickel.
 

Answer:

 
 

b) Which electrons in the above electron configuration are valence electrons?

Answer:

c) What would be the expected charge of a nickel cation?

Answer:

Provide detailed work for question 10 on a separate piece of paper

Q10 (5 marks) a) Derive the "general valence electron configuration" for the elements in group VIA.

Hint: In this question you are asked to write electron configurations (full or short hand) for at least four elements in group VI
and stating the common features (see similar treatment for group IA metals in your class notes from March 13).
 

"general valence electron configuration":

b) What is the charge of the most common ion elements in group VIA will form? Make sure you also provide justification for your answer.

Answer: