The Total solution for NCERT class 6-12
The size of an isoelectronic speciesincreases with a decrease in the nuclear charge (Z). For example, the order of theincreasing nuclear charge of F–,Ne, and Na+ is as follows:
F– < Ne < Na+
Z 9 10 11
Therefore, the order of the increasing size of F–, Ne and Na+ is as follows:
Na+ < Ne < F–