Atomic and Ionic Radius

Write the variation of atomic radius of the first transition series.

The atomic size of gallium is _____ than aluminium.

The atomic size of gallium is smaller than aluminium. Why?

Assertion. ${\mathrm{Na}}^{+}$ and ${\mathrm{Al}}^{3+}$ are isoelectronic but the magnitude of the ionic radius of ${\mathrm{Al}}^{3+}$ is less than that of ${\mathrm{Na}}^{+}$ .

Reason. The magnitude of effective nuclear charge of the outer shell electrons in ${\mathrm{Al}}^{3+}$ is greater than in ${\mathrm{Na}}^{+}$ .

The metallic radius is half of the total distance between the nuclei of two adjacent atoms in a _____.

Mark the following statement as true or false.

Metallic radii increases across the period due to an increase in the effective nuclear charge.

How does metallic radius defined?

Amongst isoelectronic species, smaller the positive charge on the cation, smaller is the ionic radius.

Which of the following has highest value of ionic radius?

The ionic radii of ${\mathrm{Na}}^{+}, {\mathrm{F}}^{-}, {\mathrm{O}}^{2-}, {\mathrm{N}}^{3-}$ follow the order

Size of anion is greater than its atom because the effective _____ charge of the anion is smaller than that of its parent atom.

In crystals of which of the following ionic compounds, would you expect the maximum distance between centres of cations and anions.

Which among the following species has the same number of electrons in its outermost as well as penultimate shell ?

The correct arrangement for the ions in the increasing order of their radii is

The correct order of decreasing ionic radii among the following isoelectronic species is

For ${\mathrm{Na}}^{+} , {\mathrm{Mg}}^{2+} , {\mathrm{F}}^{-} \mathrm{and} {\mathrm{O}}^{2-}$ the correct order of increasing ionic radii is

The sizes of following species increase in the order:

Which of the following has highest value of ionic radius?

Identify the wrong statement in the following :

Cation is smaller than neutral atom and anion a bigger than neutral atom. Why?