Question

Write some similarities and differences between Lanthanide and Actinide.

Answer 1

Lanthanoids and actinoids:

• f-block transition elements are lanthanoids and actinoids.
• The periodicity of these elements' electrical structures differs from the most stream, as seen by their placement in separate positions within the table.

Similarities between lanthanoids and actinoids:

• Lanthanoids and actinoids both have a $+3$ most common oxidation state.
• The f-orbitals gradually fill in both series. In both series, the ionic radius of the whether decreases as the number increases.
• For all the cases, the electronegativity in both series is low. So, they are electropositive in nature.

Differences between lanthanides and actinides:

• In the case of Lanthanoide, progressive filling of 4f-orbital takes place while 5f-orbital is progressively filled in the case of actinoids.
• Except for Promethium, lanthanoid elements are non-radioactive in nature, whereas all actinoid series members are radioactive.
• Lanthanoids are less reactive as compared to actinoids.
• The magnetic property of Lanthanoids is less complex as compared to actinoids.