AIEEE 2008 | Coordination Compounds Question 252 | Chemistry

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,

6 and 2

4 and 2

4 and 3

6 and 3

AIEEE 2007

MCQ (Single Correct Answer)

-1

Which one of the following has a square planar geometry?

[CoCl₄]^2-

[FeCl₄]^2-

[NiCl₄]^2-

[PtCl₄]^2-

AIEEE 2006

MCQ (Single Correct Answer)

-1

The IUPAC name for the complex [Co(NO₂)(NH₃)₅]Cl₂ is

nitrito-N-pentaamminecobalt (III) chloride

nitrito-N-pentaamminecobalt (II) chloride

pentaammine nitrito-N-cobalt (II) chloride

pentaammine nitrito-N-cobalt (III) chloride

AIEEE 2006

MCQ (Single Correct Answer)

-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

one, tetrahedral

two, tetrahedral

one, square planar

two, square planar

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