Gamma Question Bank for Medical Chemistry>Chapter 22 - The d and f-Block Elements>Assignment Set-2>SECTION - B

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The transition element which does not exhibit variable oxidation state is

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Important Questions on The d and f-Block Elements

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Gamma Question Bank for Medical Chemistry>Chapter 22 - The d and f-Block Elements>Assignment Set-2>SECTION - B

Identify the paramagnetic lanthanoid ion among the following

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Gamma Question Bank for Medical Chemistry>Chapter 22 - The d and f-Block Elements>Assignment Set-2>SECTION - B

The change in the oxidation state of Mn from permanganate ion to the product obtained from its reaction in faintly alkaline medium is

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Gamma Question Bank for Medical Chemistry>Chapter 22 - The d and f-Block Elements>Assignment Set-2>SECTION - B

The equilibrium

2 {CrO}_{4}^{2 -} ⇌ C r_{2} O_{7}^{2 -}

shifts to the right in

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Gamma Question Bank for Medical Chemistry>Chapter 22 - The d and f-Block Elements>Assignment Set-2>SECTION - B

In dichromate ion

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Gamma Question Bank for Medical Chemistry>Chapter 22 - The d and f-Block Elements>Assignment Set-2>SECTION - B

The correct match of the order of the ions/elements for the given properties is/are
(i)

{Mn}^{2 +} < {Fe}^{2 +} < {Co}^{2 +} < {Ni}^{2 +} -

Magnitude of hydration enthalpy
(ii)

Co > Ni > Fe > Mn -

Atomic radii
(iii)

{Ni}^{2 +} < {Co}^{2 +} < {Fe}^{2 +} < {Mn}^{2 +} -

Number of unpaired electrons

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Gamma Question Bank for Medical Chemistry>Chapter 22 - The d and f-Block Elements>Assignment Set-2>SECTION - B

The coloured product obtained on reaction of ferrous chromate with sodium carbonate in free access of air is

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Gamma Question Bank for Medical Chemistry>Chapter 22 - The d and f-Block Elements>Assignment Set-2>SECTION - B

The transition metals form a large number of complex compounds due to

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Gamma Question Bank for Medical Chemistry>Chapter 22 - The d and f-Block Elements>Assignment Set-2>SECTION - B

Among lanthanoids, the basic nature of hydroxides gradually