1
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
Which of the following complex ions is expected to absorb visible light?
(At. nos. Zn = 30, Sc = 21, Ti = 22, Cr = 24)
A
[Ti(en)2(NH3)2]4+
B
[Cr(NH3)6]3+
C
[Zn(NH3)6]2+
D
[Sc(H2O)3(NH3)3]3+
2
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
Which of the following complexes exhibits the highest paramagnetic behaviour?
where gly = glycine, en = ethylenediamine and bpy = bipyridyl moities.
(At. nos. Ti = 22, V = 23, Fe = 26, Co = 27)
A
[Co(ox)2(OH)2]$$-$$
B
[Ti(NH3)6]3+
C
[V(gly)2(OH)2(NH3)2]+
D
[Fe(en)(bpy)(NH3)2]2+
3
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
In which of the following coordination entities the magnitude of $$\Delta $$o (CFSE in octahedral field) will be maximum?
(At. No. Co = 27)
A
[Co(CN)6]3$$-$$
B
[Co(C2O4)3]3$$-$$
C
[Co(H2O)6]3+
D
[Co(NH3)6]3+
4
AIPMT 2007
MCQ (Single Correct Answer)
+4
-1
The d electron configurations of Cr2+, Mn2+, Fe2+ and Ni2+ are 3d4, 3d5, 3d6 and 3d8 respectively. Which one of the following aqua complexes will exhibit the minimum paramagnetic behaviour?

(At. No. Cr = 24, Mn = 25, Fe = 26, Ni = 28)
A
[Fe(H2O)6]2+
B
[Ni(H2O)6]2+
C
[Cr(H2O)6]2+
D
[Mn(H2O)6]2+
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