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Which outcome occurs when the effective nuclear charge decreases?

A)Atomic radius will significantly increase
B)Binding energy will significantly increase
C)Ionisation energy remains nearly constant
D)Nuclear stability is substantially enhanced

💡 Explanation

A decreased effective nuclear charge reduces the electrostatic attraction between the nucleus and valence electrons because shielding increases; therefore, the atomic radius increases, rather than stability increasing or binding energy increasing because weaker attraction does not facilitate nuclear interactions.

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