JEE Main 2024 Chemistry question

Chemistry Classification of Elements and Periodicity in Properties JEE Main 2024

In case of isoelectronic species the size of F, Ne and Na is affected by:

(A)Electron-electron interaction in the outer orbitals.
(B)Principal quantum number (n)
(C)Nuclear charge (z)Correct
(D)None of the factors because their size is the same

Answer: (C)

Solution

All have 10 electrons; the larger nuclear charge of Na pulls the electron cloud in more.

Question ID VK-011256