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Q.
Identify the incorrect statement among the following.
The d-and f-Block Elements
Solution:
The decrease in the torce of attraction exerted by the nucleus on the valency electrons due to the presence of electrons in the inner-shells is called shielding effect. A $4f$-orbital is nearer to the nucleus than $5f$-orbitals.
Hence, shielding of $4f$ is more than $5f$.