Home Chemistry Classification of Elements and Periodicity JEE Main 2019 The size of the iso-electronic species and …
Chemistry Classification of Elements and Periodicity JEE Main 2019 Single Correct MCQ
Published on: August 13, 2026

The size of the iso-electronic species and is affected by:

A
azimuthal quantum number of valence shell
B
electron-electron interaction in the outer orbitals
C
principal quantum number of valence shell
D
nuclear charge

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The correct answer is:
D


Iso-electronic species differ in size due to different effective nuclear charge.

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