Class 12th Chemistry 2017 Set2 Delhi Board Paper Solution

Question 25

Write one similarity and one difference between the chemistry of lanthanoid and actinoid elements.

Answer

Similarity: Both shows mainly an oxidation state of +3 and both are elctro positive and very reactive.

Difference: lanthanoid have less tendency to form complex whereas, actinoid have great tendency for form complex.Lanthanoid are colourless whereas, actinoids are colourful.

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