Question

Arrange the following ions in order of increasing ionic radius: F- , Na+ , O2-, Mg2+, N-3

Answer 1

think in your question the nitrogen is in -3 state.Only then the given ions become iso-electronic species.

The ionic radii of isoelectronic species increases with a decrease in the magnitudes of nuclear charge.

The arrangement of the given species in order of their increasing nuclear charge is as follows:

N3– < O2– < F– < Na+ < Mg2+ < Al3+

Nuclear charge = +7 +8 +9 +11 +12 +13

Therefore, the arrangement of the given species in order of their increasing ionic radii is as follows:

Al3+ < Mg2+ < Na+ < F– < O2– < N3–

Step-by-step explanation: