1
AIEEE 2008
MCQ (Single Correct Answer)
+4
-1
Larger number of oxidation states are exhibited by the actinoids than those by the lanthanoids, the main reason being :
A
4f orbitals more diffused than the 5f orbitals
B
lesser energy difference between 5f and 6d than between 4f and 5d orbitals
C
more energy difference between 5f and 6d than between 4f and 5d orbitals
D
more reactive nature of the actinoids than the lanthanoids
2
AIEEE 2008
MCQ (Single Correct Answer)
+4
-1
In which of the following octahedral complexes of Co (at. no. 27), will the magnitude of $$\Delta _o$$ be the highest?
A
[Co(CN)6]3−
B
[Co(C2O4)3]3−
C
[Co(H2O)6]3+
D
[Co(NH3)6]3+
3
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
4
AIEEE 2008
MCQ (Single Correct Answer)
+4
-1
The organic chloro compound, which shows complete stereochemical inversion during a SN2 reaction, is
A
(C2H5)2CHC
B
(CH3)3CCl
C
(CH3)2CHCl
D
CH3Cl
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