JEE Main Chemistry question

Ionisation potential values of -block elements, as compared to ionisation potential values of -block elements, are

(A)HigherCorrect
(B)Lower
(C)Equal
(D)Either of these

Answer: (A)

Solution

-block (lanthanide/actinide) elements experience poor shielding from their diffuse -electrons, but this is generally outweighed by the comparatively easier removal of their outer electrons due to greater overall electron-electron repulsion effects

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Question ID VK-133438