KCET 2026 | Coordination Compounds Question 1 | Chemistry

List-I (Complex)		List-II (Geometry)
(a)	$[\text{Co(NH}_3\text{)}_6]^{3+}$	(i)	Trigonal bipyramidal
(b)	$[\text{NiCl}_4]^{2-}$	(ii)	Octahedral
(c)	$[\text{Ni(CN)}_4]^{2-}$	(iii)	Tetrahedral
(d)	$[\text{Fe(CO)}_5]$	(iv)	Square planar

Choose the correct answer from the options given below.

a-ii, b-iii, c-iv, d-i

a-ii, b-i, c-iii, d-iv

a-iii, b-ii, c-iv, d-i

a-i, b-iii, c-iv, d-ii

KCET 2026

MCQ (Single Correct Answer)

-0

Given below are two statements:
Statement-I: The $\text{M}-\text{C}$ $\sigma$ bond is formed by the donation of lone pair of electrons on the carbonyl carbon into a vacant d-orbital of the metal.
Statement-II: The $\text{M}-\text{C}$ $\pi$ bond is formed by the donation of a pair of electrons from a filled d-orbital of metal into the vacant antibonding $\pi^*$ orbital of carbon monoxide.
In the light of the above statements, choose the correct answer from the options given below:

Both Statement I and Statement II are correct

Both Statement I and Statement II are incorrect

Statement I is correct but Statement II is incorrect

Statement I is incorrect but Statement II is correct

KCET 2026

MCQ (Single Correct Answer)

-0

How many ions per molecule are produced from the complex $[\text{Co(NH}_3\text{)}_6]\text{Cl}_2$ in solution?

$6$

$4$

$3$

$2$

KCET 2026

MCQ (Single Correct Answer)

-0

Which of the following is the most stable complex ion?

$[\text{Fe(CO)}_5]$

$[\text{Fe(CN)}_6]^{3-}$

$[\text{Fe}(\text{C}_2\text{O}_4)_3]^{3-}$

$[\text{Fe}(\text{H}_2\text{O})_6]^{3+}$

KCET Subjects

Browse all chapters by subject

Chemistry

Physical Chemistry

Some Basic Concepts of Chemistry Atomic Structure States of Matter Thermodynamics Chemical Equilibrium Ionic Equilibrium Liquid Solution Redox Reactions Surface Chemistry Solid State Electrochemistry Chemical Kinetics Nuclear Chemistry

Inorganic Chemistry

Periodic Table and Periodicity Chemical Bonding and Molecular Structure Metallurgy Hydrogen and It's Compounds s-Block Elements p-Block Elements d and f Block Elements Coordination Compounds Salt Analysis Environmental Chemistry

Organic Chemistry

IUPAC Nomenclatures General Organic Chemistry Isomerism Hydrocarbons Haloalkanes and Haloarenes Alcohol, Phenols and Ethers Aldehyde and Ketone Carboxylic Acids and Its Derivatives Compounds Containing Nitrogen Polymers Biomolecules Chemistry in Everyday Life Practical Organic Chemistry