JEE Main 2019 (Online) 9th January Morning Slot | Coordination Compounds Question 156 | Chemistry

JEE Main 2019 (Online) 9th January Morning Slot

MCQ (Single Correct Answer)

-1

Two complexes [Cr(H₂O)₆]Cl₃ (A) and [Cr(NH₃)₆]Cl₃ (B) are violet and yellow coloured, respectively. The incorrect statement regarding them is :

$$\Delta $$₀ values of (A) and (B) are calculated from the energies of violet and yellow light, respectively

both are paramagnetic with three unpaired electrons

both absorb energies corresponding to their complementry colors.

$$\Delta $$₀ value for (A) is less than that of (B).

JEE Main 2018 (Online) 16th April Morning Slot

MCQ (Single Correct Answer)

-1

In Wilkinson's catalyst, the hybridization of central metal ion and its shape are respectively :

sp³d, trigonal bipyramidal

sp³, tetrahedral

dsp², square planar

d²sp³, octahedral

JEE Main 2018 (Online) 16th April Morning Slot

MCQ (Single Correct Answer)

-1

Which of the following complexes will shows geometrical isomerism ?

aquachlorobis (ethylenediamine) cobalt (II) chloride

pentaaquachlorohromium (III) chloride

potassium amminetrichloropltinate (II)

potassium tris(oxalato) chromate (III)

JEE Main 2018 (Offline)

MCQ (Single Correct Answer)

-1

Consider the following reaction and statements:
[Co(NH₃)₄Br₂]⁺ + Br^- $$\to$$ [Co(NH₃)₃Br₃] + NH₃
(I) Two isomers are produced if the reactant complex ion is a cis-isomer
(II) Two isomers are produced if the reactant complex ion is a trans-isomer
(III) Only one isomer is produced if the reactant complex ion is a trans-isomer
(IV) Only one isomer is produced if the reactant complex ion is a cis – isomer
The correct statements are

(II) and (IV)

(I) and (II)

(I) and (III)

(III) and (IV)

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