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(chem331)[2009](f)midterm~1613^_10014.pdf
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CHEM 331
PRS 6 (October 6)
(i)
The ground term for the p4 configuration is _____

(1)
1P (2) 3P (3) 1D (4) 3D (5) 1F (6) 3F

(ii)
How many microstates are there in 4F?

(1)
12 (2) 21 (3) 27 (4) 28 (5) 63


(iii) The ground spectral term for [V(H2O)6]2+ is___
(1)
3T1g (2) 3T2g (3) 3A2g (4) 4T1g

(5)
4T2g (6) 4A2g

(iv)
The ground spectral term for [CoCl4]2-(tetrahedral) is ____.

(1)
3T1 (2) 3T2 (3) 3A2 (4) 4T1 (5) 4T2 (6) 4A2

PRS 7 (Oct. 15)

(i)
Which of the following has the smallest B value?

(1)
Cr(g)3+ (2) [Cr(H2O)6]3+ (3) [Cr(NH3)6]3+

(4)
[CrBr6]3-



(ii)
Which of the following has the lowest charge transfer energy?

(1)
[MoSe4]2-(2) [MoS4]2-(3) [WS4]2-

(4)
[MoO4]2-(5) [WO4]2-




(iii) Which of the following has the highest charge transfer energy? (bpy = 2,2-bipyridine)
(1)
[Fe(bpy)3]2+ (2) [Fe(bpy)3]3+

(3)
[Ru(bpy)3]2+ (4) [Ru(bpy)3]3+


(iv) Which of the following is most intensely colored?
(1)
[Fe(H2O)6]3+ (2) [Fe(H2O)6]2+

(3)
[Fe(bpy)3]2+ (4) [Fe(bpy)3]3+


PRS 8 (Oct 22)
(i)
The number of possible J values for the term 7F is ___.

(1)
3 (2) 4 (3) 5 (4) 6 (5) 7

(ii)
The ground level for the term 5I is _____. (more than half filled)

(1)
5I4 (2) 5I6 (3) 5I6 (4) 5I7 (5) 5I8


(iii) The theoretical magnetic moment for Cr2+(g) is ___ B.
(1)
0 (2) 24 (3) 30 (4) 35 (5) 36

(iv)
Which one of the following has orbital contribution to the magnetic moment?

(1)
[V(H2O)6]2+ (2) [Mn(H2O)6]2+ (3) [Fe(H2O)6]2+

(4)
[Ru(H2O)6]2+ (5) [Ni(H2O)6]2+