Atomic Radii, Ionic Radii and Vanderwall Radii

The ions  ${\mathrm{O}}^{2-},{\mathrm{F}}^{-},{\mathrm{Na}}^{+},{\mathrm{Mg}}^{2+}\mathrm{and}{\mathrm{Al}}^{3+}$ are isoelectronic. Their ionic radii show:

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 atomic radii of $\mathrm{Li}, \mathrm{F}, \mathrm{Na}$ and $\mathrm{Si}$ follow the order:

Identify the correct order of ionic radii of the given species:

Which of the following sequences is the correct order of the size of species?

Which among the following iso-electronic species has the smallest size?
${\mathrm{O}}^{2-}, {\mathrm{F}}^{-}, \mathrm{Ne}, {\mathrm{Na}}^{+}, {\mathrm{Mg}}^{2+}, {\mathrm{Al}}^{3+}, {\mathrm{Si}}^{4+}$

The ions ${\mathrm{S}}^{2-}, {\mathrm{Cl}}^{-}, {\mathrm{K}}^{+}, {\mathrm{Ca}}^{2+}$ are iso-electronic. Their ionic radii show $\_\_\_\_\_\_\_$

Effective nuclear charge is maximum in case of ________

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.

Give the trends of metallic radius in the periodic table.

How does metallic radius defined?

Which one is the correct order of the size of the iodine species ?

The ionic radii $\left(\text{in}\mathrm{ Å}\right)$ of ${\mathrm{N}}^{3-},\mathrm{ }{\mathrm{O}}^{2-}\mathrm{ }$ and $\mathrm{ }{\mathrm{F}}^{-}\mathrm{ }$ are respectively:

Choose the correct statement:

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 correct order of radius for the following elements is

$\mathrm{Ti}, \mathrm{Co}, \mathrm{Cs}, \mathrm{Br}, \mathrm{K}, \mathrm{O}, \mathrm{F}$

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