Which of the following complexes will show geometrical isomerism?

Aquachlorobis(ethylenediamine)cobalt(II)chloride

Potassium tris(oxalato)chromate(III)

Pentaaquachlorochromium(II)chloride

Potassiumamminetrichloroplatinate(II)

The correct option(s) regarding the complex Co en NH 3 3 H 2 O 3 + is (are) (en = H 2 NCH 2 CH 2 NH 2 )

It absorbs light at longer wavelength as compared to Co en NH 3 4 3 +

The correct statement(s) regarding the binary transition metal carbonyl compounds is (are) (Atomic numbers: F e = 26 , N i = 28 )

Metal - carbon bond strengthens when the oxidation state of the metal is lowered

Total number of valence shell electrons at metal center in Fe CO 5 or Ni CO 4 is 16

The carbonyl C - O bond weakens when the oxidation state of the metal is increased

The correct combination is

NiCl 4 2 - - paramagnetic; Ni ( CO ) 4 - tetrahedral

NiCl 4 2 - - Square planar; Ni ( CN ) 4 2 - - paramagnetic

Ni ( CN ) 4 2 - - tetrahedral; Ni ( CO ) 4 2 - - paramagnetic

NiCl 4 2 - - diamagnetic; Ni ( CO ) 4 - square-planar

E M B I B E

Alpha Question Bank for Engineering: Chemistry>Chapter 21 - Coordination Compounds>Exercise-3>Q 66

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IMPORTANT

Earn 100

The magnetic moment (spin only) of ${[{NiCl}_{4}]}^{2 -}$ is

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Important Questions on Coordination Compounds

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Alpha Question Bank for Engineering: Chemistry>Chapter 21 - Coordination Compounds>Exercise-3>Q 67

Which among the following will be named as dibromidobis (ethylenediamine) chromium (III) bromide?

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Alpha Question Bank for Engineering: Chemistry>Chapter 21 - Coordination Compounds>Exercise-3>Q 68

Which of the following complex species is not expected to exhibit optical isomerism ?

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Alpha Question Bank for Engineering: Chemistry>Chapter 21 - Coordination Compounds>Exercise-3>Q 70

The number of geometric isomers that can exist for square planar

{[Pt (Cl) (py) ({NH}_{3}) ({NH}_{2} OH)]}^{+}

is (

py =

pyridine):

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Alpha Question Bank for Engineering: Chemistry>Chapter 21 - Coordination Compounds>Exercise-3>Q 71

The pair having the same magnetic moment is:

[A t . N o . : C r = 24, M n = 25, F e = 26, C o = 27]

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Alpha Question Bank for Engineering: Chemistry>Chapter 21 - Coordination Compounds>Exercise-3>Q 72

Which one of the following complexes shows optical isomerism?

(en $=$ ethylenediamine)

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Alpha Question Bank for Engineering: Chemistry>Chapter 21 - Coordination Compounds>Exercise-3>Q 73

On treatment of

100 mL

of

0.1 M

solution of

{CoCl}_{3} . 6 H_{2} O

with excess

{AgNO}_{3}; 1.2 \times 10^{22}

ions are precipitated. The complex is:

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Alpha Question Bank for Engineering: Chemistry>Chapter 21 - Coordination Compounds>Exercise-3>Q 74

Consider the following reaction and statements:

{[Co {({NH}_{3})}_{4} {Br}_{2}]}^{+} + {Br}^{-} \to [Co {({NH}_{3})}_{3} {Br}_{3}] + {NH}_{3}

(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

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Alpha Question Bank for Engineering: Chemistry>Chapter 21 - Coordination Compounds>Exercise-3>Q 75

An octahedral complex of Co³⁺ is diamagnetic. The hybridisation involved in the formation of the complex is :