Lanthanides Versus Actinides: Key Differences and Properties

The video tutorial explains the differences between Lanthanides and Actinides, focusing on their positions in the periodic table, orbital filling, atomic numbers, oxidation states, paramagnetic properties, radioactivity, oxocations, compounds, binding energy, and shielding effects. Lanthanides fill 4F-orbitals and have atomic numbers 57-71, while Actinides fill 5F-orbitals with atomic numbers 89-103. Lanthanides show a maximum oxidation state of ±4, whereas Actinides exhibit variable states up to ±7. Lanthanides are mostly non-radioactive, unlike the radioactive Actinides. The video also covers the basicity of compounds and the effectiveness of shielding effects.

Which series do Lanthanides belong to in the periodic table?

• D block

• S block

• F block

• P block

What is the range of atomic numbers for Actinides?

• 104 to 118

• 1 to 18

• 89 to 103

• 57 to 71

Which oxidation state is not typically shown by Lanthanides?

• ±2

• ±4

• ±3

• ±5

Why is it difficult to explain the paramagnetic properties of Actinides?

• Due to their non-radioactive nature

• Because of their complex electronic configurations

• Because they do not form compounds

• Due to their simple atomic structure

Which element in the Lanthanide series is radioactive?

• Gadolinium

• Neodymium

• Promethium

• Europium

What is a characteristic of compounds formed by Actinides?

• They are highly basic

• They are less basic

• They are acidic

• They are neutral

Which series has a more effective shielding effect?

• Neither has a shielding effect

• Both have the same effect

• Actinides

• Lanthanides

What is true about the binding energy of Actinides compared to Lanthanides?

• It is equal to 4f-orbitals

• It is more than 4f-orbitals

• It is less than 5f-orbitals

• It is less than 4f-orbitals