1
AIEEE 2008
MCQ (Single Correct Answer)
+4
-1
The coordination number and the oxidation state of the element ‘E’ in the complex [E(en)2(C2O4)]NO2 (where (en) is ethylene diamine) are, respectively,
A
6 and 2
B
4 and 2
C
4 and 3
D
6 and 3
2
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
Which one of the following has a square planar geometry?
A
[CoCl4]2-
B
[FeCl4]2-
C
[NiCl4]2-
D
[PtCl4]2-
3
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
The IUPAC name for the complex [Co(NO2)(NH3)5]Cl2 is
A
nitrito-N-pentaamminecobalt (III) chloride
B
nitrito-N-pentaamminecobalt (II) chloride
C
pentaammine nitrito-N-cobalt (II) chloride
D
pentaammine nitrito-N-cobalt (III) chloride
4
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
Nickel (Z = 28) combines with a uninegative monodentate ligand X to form a paramagnetic complex [NiX4]2− . The number of unpaired electron(s) in the nickel and geometry of this complex ion are, respectively
A
one, tetrahedral
B
two, tetrahedral
C
one, square planar
D
two, square planar
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