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The Lanthanide contraction relates to

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Important Questions on The d- and f-Block Elements

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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>The Lanthanoids

Which of the following lanthanoid is diamagnetic?

Atomic no's $Sm = 62, Ce = 58, Eu = 63, Yb = 70$

EASY

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>The Lanthanoids

The effect of lanthanoid contraction in the lanthanoid series of elements by and large means

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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>The Lanthanoids

Incorrect statement with reference to

Ce

(Z = 58)

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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>The Lanthanoids

Decrease in ionic size in a period is observed in

EASY

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>The Lanthanoids

What is the action of the following on lanthanoids?

Nitrogen, heat

MEDIUM

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>The Lanthanoids

Among

Ce (4 f^{1} 5 d^{1} 6 s^{2}), Nd (4 f^{1} 6 s^{2}), Eu (4 f^{7} 6 s^{2})

and

Dy (4 f^{10} 6 s^{2})

, the elements having highest and lowest

3

rd ionisation energies, respectively are

EASY

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>The Lanthanoids

The lanthanide ion that would show colour is:

MEDIUM

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>The Lanthanoids

Read the following statements and choose the correct option.
(i) $f$ -block elements of $6^{th}$ period are called lanthanoids.
(ii) $f$ -block elements of $7^{th}$ period are called actinoids.

EASY

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>The Lanthanoids

What is the action of the following on lanthanoids?

Sulphur, heat

MEDIUM

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>The Lanthanoids

The radius of

{La}^{3 +}

(atomic number of

La = 57

) is

1 .06 Å

. Which one of the following given values will be closest to the radius of

{Lu}^{3 +}

(atomic number of

Lu = 71

EASY

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>The Lanthanoids

Which of the following properties is NOT of lanthanoids?

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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>The Lanthanoids

Which of the following oxidation states is common for all lanthanoid?

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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>The Lanthanoids

Which statement is incorrect with reference to inner transition elements?

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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>The Lanthanoids

Which of the following lanthanide ions has the highest number of unpaired electrons?

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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>The Lanthanoids

Which of the following elements involves gradual filling of

4 f

- levels?

MEDIUM

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>The Lanthanoids

Which one of the following lanthanides exhibits

+ 2

oxidation state with diamagnetic nature ? (Given

Z

for

Nd = 60, Yb = 70, La = 57, Ce = 58)

HARD

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>The Lanthanoids

The incorrect statement among the following is:

EASY

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>The Lanthanoids

Knowing that the chemistry of lanthanides

(Ln)

is dominated by their

+ 3

oxidation state, which of the following statements is incorrect?

EASY

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>The Lanthanoids

What is the action of the following on lanthanoids?

water

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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>The Lanthanoids

Which of the following elements has the largest atomic radius?

The Lanthanide contraction relates to

Important Questions on The d- and f-Block Elements

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