Consider the following species :

N $^{3 -}$ , O $^{2 -}$ ,F $^{-}$ , Na $^{+}$ , Mg $^{2 +}$ and Al $^{3 +}$

(a) What is common in them?

(b) Arrange them in the order of increasing ionic radii.

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Solution

(a) All the given species contain same number of electrons (10). Hence, they are isoelectronic species. With increase in the nuclear charge, the ionic size decreases.

(b) The increasing order of ionic radii is $A l^{3 +} < M g^{2 +} < N a^{+} < F^{-} < O^{2 -} < N^{3 -}$ .

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Similar questions

Consider the following species: $N^{3 -}, O^{2 -}, F^{-}, N a^{+}, M g^{2 +} a n d A l^{3 +}$
(a)What is common in them?
(b)Arrange them in the order of increasing ionic radii.

Q. Consider the following species.

N^{3 -}, O^{2 -}, M g^{2 +}

and

F^{-}

(i) What is common in them?
(ii) arrange them in order of increasing ionic radii.

Q. Arrange the following species in the increasing order of their ionic radii, giving reasons.

{M g}^{2 +}, O^{2 -} {A l}^{3 +}; N^{3 -}, F^{-}, {N a}^{+}

N^3- , O^2- , F^- , Mg^2+ , Na^+ , Al^3+ Arrange in the increasing order of ionic radii.

Q. Arrange

N a^{+}, M G^{2 +}, O^{2 -}, F^{-} A l^{3 +}, N^{3 -}

(each having 10 electrons) in increasing ionic radii.

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Consider the following species :N3− , O2− ,F−, Na+ , Mg2+and Al3+(a) What is common in them?(b) Arrange them in the order of increasing ionic radii.

(a) All the given species contain same number of electrons (10). Hence, they are isoelectronic species. With increase in the nuclear charge, the ionic size decreases.(b) The increasing order of ionic radii is Al3+<Mg2+<Na+<F−<O2−<N3−.

Consider the following species :

N $^{3 -}$ , O $^{2 -}$ ,F $^{-}$ , Na $^{+}$ , Mg $^{2 +}$ and Al $^{3 +}$

(a) What is common in them?

(b) Arrange them in the order of increasing ionic radii.

(a) All the given species contain same number of electrons (10). Hence, they are isoelectronic species. With increase in the nuclear charge, the ionic size decreases.

(b) The increasing order of ionic radii is $A l^{3 +} < M g^{2 +} < N a^{+} < F^{-} < O^{2 -} < N^{3 -}$ .