Single Choice

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

AAll the lanthanons are much more reactive than aluminium.
Correct Answer
BCe (+4) solutions are widely used as oxidizing agent in volumetric analysis.
CEuropium shows +2 oxidation state.
DThe basicity decreaes as the ionic radius decreases from Pr to Lu.

Solution

All the lanthanoids are less reactive than aluminium. Because Lanthanoids are having high ionization potential values and shows inert pair effect.

SIMILAR QUESTIONS

d - block and f - block Elements

Total number of inner transition elements in the periodic table is:

d - block and f - block Elements

In context of the lanthanoids, which of the following statements is not correct?

d - block and f - block Elements

Larger number of oxidation states are exhibited by the actinoids than those by the lanthanoids, the main reason being :

d - block and f - block Elements

Which of the following statements is not correct for the F block elements?

d - block and f - block Elements

What are inner transition elements? Decide which of the following atomic numbers are the atomic numbers of the inner transition elements : $$29, 59, 74, 95, 102, 104$$.

d - block and f - block Elements

Which is the first energy level containing f-orbitals?

d - block and f - block Elements

Although Zirconium belongs to 4d transition series and Hafnium to 5d transition series even then they show similar physical and chemical properties because:

d - block and f - block Elements

Although Zirconium belongs to 4d transition series and Hafnium to 5d transition series even then they show similar physical and chemical properties because:

d - block and f - block Elements

The group of elements in which the differentiating electron enters the antipenultimate shell of atoms are called:

d - block and f - block Elements

A reduction in atomic size with increase in atomic number is characteristic of ?

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