Home
Class 12
CHEMISTRY
Which one of the following statements re...

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

A

Ce (+4) solutions are widely used as oxidizing agent in volumetric analysis

B

Europium shows +2 oxidation state

C

The basicity decreases as the ionic radius decreases from Pr to Lu

D

All the lanthanons are much more reactive than aluminimum

Text Solution

Verified by Experts

The correct Answer is:
D
(a) `Ce^(+4)` is a good oxidizing agent and easily converted into `Ce^(+3)`
(b) `Eu(63) = 4f^(7)5d^(0)6s^(2)`, `Eu^(+2) = 4f^(7)`
(c) In lanthanoids series .Ce. to .Lu. ionic radius regular decreases of hydroxide decrease.
(d) Lanthanons are less reactive than aluminium due to high IP (Lanthanoid contraction)
Promotional Banner

Topper's Solved these Questions

  • F-BLOCK ELEMENTS

    NARAYNA|Exercise EXERCISE-4 (PROPERTIES)|15 Videos

  • F-BLOCK ELEMENTS

    NARAYNA|Exercise CHECK YOUR GRASP|2 Videos

  • F-BLOCK ELEMENTS

    NARAYNA|Exercise EXERCISE-2 (H.W) (PROPERTIES)|5 Videos

  • ELECTRO CHEMISTRY

    NARAYNA|Exercise EXERCISE - IV|44 Videos

  • HALOALKANE AND HALOARENES

    NARAYNA|Exercise EXERCISE - 4|59 Videos

Similar Questions

Explore conceptually related problems

Which one of the following statement is incorrect

Which one of the following statement is incorrect

Which one of the following statement is incorrect