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Among isoelectronic species, a larger nuclear charge gives a radius:
ADoubled
BSmaller
CLarger
DEqual
Answer & Solution
Correct answer: B. Smaller
1. All the species hold the same number of electrons.
2. A stronger nucleus pulls those electrons in harder.
3. So the larger positive charge gives the smaller radius.
_Source: NCERT Class 11 Chemistry Part I, Chapter 3, Classification of Elements and Periodicity in Properties._
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