EASY

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Which statement is incorrect with reference to inner transition elements?

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Important Questions on d- and f-Block elements

MEDIUM

Chemistry>Inorganic Chemistry>d- and f-Block elements>Introduction to 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

MEDIUM

Chemistry>Inorganic Chemistry>d- and f-Block elements>Introduction to Lanthanoids

Which of the following lanthanoid is diamagnetic?

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

EASY

Chemistry>Inorganic Chemistry>d- and f-Block elements>Introduction to Lanthanoids

Which of the following statement is not correct?

EASY

Chemistry>Inorganic Chemistry>d- and f-Block elements>Introduction to Lanthanoids

Given below are two statements:

Statement I : ${CeO}_{2}$ can be used for oxidation of aldehydes and ketones.

Statement II : Aqueous solution of ${EuSO}_{4}$ is a strong reducing agent. In the light of the above statements, choose the correct answer from the options given below:

EASY

Chemistry>Inorganic Chemistry>d- and f-Block elements>Introduction to Lanthanoids

Mischmetal is an alloy consisting mainly of :

EASY

Chemistry>Inorganic Chemistry>d- and f-Block elements>Introduction to Lanthanoids

Which one of the following lanthanoids does not form

{MO}_{2}

? [

M

is lanthanoid metal]

HARD

Chemistry>Inorganic Chemistry>d- and f-Block elements>Introduction to Lanthanoids

Identify the formula of compound $(B)$ formed in following reaction.

(i) Lanthanoide $(Ln)$ burnt in oxygen forming compound $(A)$

(ii) Compound $(A)$ reacts with ${CO}_{2}$ in excess to form compound $(B)$

MEDIUM

Chemistry>Inorganic Chemistry>d- and f-Block elements>Introduction to Lanthanoids

The most basic hydroxide among the following is

EASY

Chemistry>Inorganic Chemistry>d- and f-Block elements>Introduction to 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>d- and f-Block elements>Introduction to Lanthanoids

Which one of the following statements related to lanthanons is incorrect?

EASY