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Which contraction is more effective lanthanoid …

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Which contraction is more effective lanthanoid or actinoid and also give reason ?

Posted by Shweta Kashyap 7 years, 11 months ago

CBSE > Class 12 > Chemistry

3 answers

Vineet Kumar Gupta 7 years, 11 months ago

actinoid contration is more than lantonoid contraction as 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 that experienced by lanthanoids. Hence, the size contraction in actinoids is greater as compared to that in lanthanoids.

Shweta Kashyap 7 years, 11 months ago

How give reason

Snehal Rahane 7 years, 11 months ago

Lanthanoid contraction

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