Question

consider the following species?
N³-,O²‐,F-,Na+,Mg²+,and Al³+
ARRANGE THEM IN THE ORDER OF INCREASING IONIC RADII​

Answer 1

Explanation:

The following ion are isoelectronic ie, contain equal number of electrons (10 electrons)

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

Answer 2

Explanation:

The following ion are isoelectronic ie, contain equal number of electrons (10 electrons)

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