Alpha Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>Exercise 2>Q 17

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The melting point of $Zn$ is lower as compared to those of the other elements of $3 d$ series because:

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Important Questions on The d- and f-Block Elements

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Alpha Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>Exercise 2>Q 18

Among the follewing series of transition metal ions, the one where all metal ions have

3 d^{2}

electronic configuration is :

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Alpha Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>Exercise 2>Q 19

Maximum oxidation sate is shown by:

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Alpha Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>Exercise 2>Q 20

Which of the following has the maximum number of unpaired

d -

electrons?

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Alpha Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>Exercise 2>Q 21

Magnetic moment of

{Cr}^{+ 2} (Z = 24), {Mn}^{+ 2} (Z = 25)

and

{Fe}^{2 +} (Z = 26)

are

x, y, z

. They are in order:

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Alpha Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>Exercise 2>Q 22

The catalytic activity of the transition metals and their compounds is ascribed to

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Alpha Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>Exercise 2>Q 23

Which forms interstitial compounds?

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Alpha Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>Exercise 2>Q 24

The yellow colour of chromate changes to orange on acidification due to formation of:

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Alpha Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>Exercise 2>Q 25

When an acidified solution of

K_{2} {Cr}_{2} O_{7}

is shaken with an aqueous solution of

{FeSO}_{4}

,