Question

distinguish between lanthanide and Actinide

Answer 1

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Lanthanoids are involved in the filling of 4f- orbitals whereas actinoids 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.
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Answer 2

Answer:

Explanation:

Lanthanoids are involved in the filling of 4f- orbitals whereas actinoids 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.