1
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
2
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
The oxidation state of Cr in [Cr(NH3)4Cl2]+ is :
A
+3
B
+2
C
+1
D
0
3
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
The IUPAC name of the coordination compound K3[Fe(CN)6] is
A
Potassium hexacyanoferrate (II)
B
Potassium hexacyanoferrate (III)
C
Potassium hexacyanoiron (II)
D
Tripotassium hexcyanoiron (II)
4
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
The value of the ‘spin only’ magnetic moment for one of the following configurations is 2.84 BM. The correct one is :
A
d4 (in strong ligand field)
B
d4 (in weak ligand field)
C
d3 (in weak as well as in strong fields)
D
d5 (in strong ligand field)
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