The ions –, F–, Na+, +and +are isoelectronic. Their ionic radii show — Periodic Table and Periodicity Chemistry Question

💡 Solution & Explanation

Isoelectronic species are the species that have the same number of electrons. In isoelectronic species, the greater the nuclear charge or atomic number the smaller will be the ionic radius. Hence, the correct order of the ionic radius is 2 2 3 O F Na Mg Al . Therefore, the ionic radius exhibits a significant decrease 2 3 O to Al .