Compare the radii of two species X and Y. Give reasons for your answer.
(a) X has 12 protons and 12 electrons
(b) Y has 12 protons and 10 electrons

AcademicChemistryNCERTClass 10

The electronic configuration of 

X -2,8,2

Y -2,8

As Y has fewer energy levels it’s atomic radius will be smaller than that of X. 

raja
Updated on 10-Oct-2022 13:28:00

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