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1
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
The “spin-only” magnetic moment [in units of Bohr magneton, (µB)] of Ni2+ in aqueous solution would be (Atomic number of Ni = 28)
A
2.84
B
4.90
C
0
D
1.73
2
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
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
In Fe(CO)5, the Fe – C bond possesses
A
π-character only
B
both $$\sigma$$ and π characters
C
ionic character
D
$$\sigma$$-character
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