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(CHEM131)[2003](f)midterm~hzhongaa^_97893.pdf
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Name: _______________________ Student ID: ____________________
Chem 131 Inorganic Chemistry I Midterm Examination
Monday, November 3, 2003. Time allowed, 120 minutes. Total 100 points plus 5 bonus points)

Note: I prepared the answers in rush. It may contain mistakes. Please let me know if you find obvious mistakes.
Section I. Multiple Choices ( 2 points each, 50 points total). For each question, select the most appropriate answer by either writing it out or circling your choice.
1. Which of the following species is/are hydrogen-like? B4+
(a)
H-(b) Na+ (c) (d) Na2+

(e)
more than one of them (f) none of them

(c)


2. Which of the following sets of quantum numbers is/are allowed for an electron in an atom?
(a)
n = 6, l = 5, ml = 3, ms = 1

(b)
n = 7, l = 6, ml = 7, ms = 1/2

(c)
n = 8, l = 8, ml = 0, ms = -1/2

(d)
n = 100, l = 5, ml = -5, ms = 1/2

(e)
more than one of them (f) none of them

(d)


3. Which of the following atomic orbital designations is/are possible?
(a)
100s (b) 3f (c) 2d (d) 8p

(e)
more than one of them (f) none of them

(e)


4. The total number of atomic orbitals in a shell of the principal quantum number 6 is
(a)
6 (b) 12 (c) 36 (d) 72 (e) none of them

(c)


5. The number of radial (spherical) nodes of a 6px orbital is
(a)
1 (b) 2 (c) 3 (d) 4 (e) 5 (f) none of them

(d)


6. Which of the following statements is/are correct?
(a)
3p and 3d orbitals of He+ have the same energy.

(b)
3p and 3d orbitals of He have the same energy.

(c)
3p and 3d orbitals of He+ have the same number of radial nodes.

(d)
3p and 3d orbitals of He+ have the same number of angular nodes.

(e)
more than one of them

(f)
none of them

(a)


7. The ground state electronic configuration of Sn is
(a)
[Xe]4s24p2 (b) [Kr]4s24p2 (c) [Xe]4s23d104p2

(d)
none of them

(d)


8. Which of the following species has/have a ground state electronic configuration of [Kr]4d6?
(a)
Ru2+ (b) Rh3+ (c) Pd4+ (d) Cr

(e)
two of them (f) three of them (g) all of them (h) none of them

(f)


9. Which of the following elements has the lowest first ionization energy?
(a)
Rb (b) In (c) As (d) Ga

(a)


10. Which of the following species has the largest size?
(a)
Mg (b) Mg2+ (c) Na (d) Cl

(c)


11. Which of the following statements is/are correct?
(a)
S is more electronegative than Se.

(b)
In Se atom, an electron in a 4p orbital feels less effective nuclear charge than an electron in a 4s orbital.

(c)
In Se atom, an electron in a 3p orbital feels larger effective nuclear charge than an electron in a 4p orbital.

(d)
two of them (e) all of them (f) none of them

(e)


12. The number of valence electrons of Rh is
(a)
2 (b) 7 (c) 9 (d) 1 (e) none of them

(c)


13. Which of the following is a reasonable resonance structure of [PO3]-?
..