Question

Give 20 difference between lanthanide Nd actinides???

Answer 1

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Lanthanides are involved in the filling of 4f- orbitals whereas actinides are involved in the filling of 5f-orbitals. ... Lanthanides are non-radioactive in nature except promethium whereas all actinide series elements are radioactive.

Write one similarity and one difference between the chemistry of lanthanoid and actinoid elements. Similarity : In lanthanoids and actinoids filling of (n-2)f orbitals is involved. Difference : Lanthanides can show a maximum oxidation state of +4 while actinides show oxidation states of +3, +4, +5, +6 and +7.

Both have a prominent oxidation state of +3. They are involved in the filling of (n-2) f orbitals. They are highly electropositive and very reactive in nature. With an increase in atomic number, there is a decrease in atomic and ionic size.

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