f-Block Elements

Write down the general outer shell electronic configuration of f-Block elements.

The most common oxidation state of lanthanoids is-:

• +4

• +3

• +6

• +2

Which of the following elements belong to actinoid-:

• Cerium

• Lutetium

• Thorium

• Lanthanum

Which element among the lanthanoids has the smallest atomic radius ?

• Ce

• Lu

• Eu

• Gd

Lanthanoids are placed in -:

• 3^rd group and 7^th period

• 3^rd group and 6^th period

• 4^rd group and 7^th period

• 4rd group and 5th period

The general electronic configuration [Rn]5f^1-14 6d^0-1 7s² is of -:

• Lanthanoids

• Actinoids

• s- block elements

• d-block elements

The general electronic configuration [Xn]4f^1-14 5d^0-1 6s² is of-:

• Lanthanoids

• Actinoids

• s- block elements

• d-block elements

Which of the following lanthanide ions are stable in water?

• Sm²⁺

• Ce⁴⁺

• Pr³

• Tb⁴

Which of the following lanthanides is used in Laser technology?

• Y

• Nd

• Lu

• La

Ion size of lanthanide is _____

• Increase from La-Lu

• Decrease from Lu-La

• Decrease from La-Lu

• Increase from Ac-Th