AIEEE 2006 | Coordination Compounds Question 255 | Chemistry

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

AIEEE 2006

MCQ (Single Correct Answer)

-1

In Fe(CO)₅, the Fe – C bond possesses :

π-character only

both $$\sigma$$ and π characters

ionic character

$$\sigma$$-character

AIEEE 2006

MCQ (Single Correct Answer)

-1

How many EDTA (ethylenediaminetetraacetic acid) molecules are required to make an octahedral complex with a Ca²⁺ ion?

Six

Three

One

Two

AIEEE 2005

MCQ (Single Correct Answer)

-1

The oxidation state of Cr in [Cr(NH₃)₄Cl₂]⁺ is :

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