What is the primary reason for the decrease in ionization enthalpy down a group? - CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROP Quiz | GKFix.in

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Question

What is the primary reason for the decrease in ionization enthalpy down a group?

A. Decrease in atomic size
B. Increase in electronegativity
C. Increase in atomic size
D. Decrease in shielding effect

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