Define lanthanides and actinides
Difference between them
Science
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Lanthanides are involved in the filling of 4f- orbitals whereas actinides are involved in the filling of 5f-orbitals.
The binding energy of 4f electrons is comparatively less than that of 5f-electrons.
Lanthanides are non-radioactive in nature except promethium whereas all actinide series elements are radioactive.
Explanation:
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