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Grade 11Inorganic Chemistry

reason of lanthanoid contraction is
​a)negligible screening effect of f-orbits
​b)increasing nuclear charge
c)decreasing nuclear charge
d)decreasing screening effect

Profile image of christopher
8 Years agoGrade 11
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1 Answer

Profile image of Varon
ApprovedApproved Tutor Answer8 Years ago
the reason for lanthanoid contraction is negligible screening effect of f orbitals because compared to d orbitals f orbitals has poor shielding and thats why as f orbitals have to fill first resulting in the contraction
 

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