Why actinoid contraction is higher than …
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Yogita Ingle 6 years, 3 months ago
In actinoids, 5f orbitals are filled. These 5f orbitals have a poorer shielding effect than 4f orbitals (in lanthanoids). Thus, the effective nuclear charge experienced by electrons in valence shells in case of actinoids is much more that than experienced by lanthanoids. Hence, the size contraction in actinoids is greater as compared to that in lanthanoids.
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