Published by:
CGP EDU Academic Team
Published on: August 12, 2026
The set representing the correct order first ionization potential is
Text Solution
Verified by ExpertsThe correct answer is:
B
Down the group the effective nuclear charge remains almost constant. But down the group with increasing atomic number, the number of shells increase and thereby atomic size increases. As a result, the distance of valence shell electron from nucleus increases, attraction between them decreases and therefore ionization energy decreases.
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