Question

which one of the following has least ionic radius O-2,F-,Na+,mg+2

Answer 1

Since all of the ions have 10 electrons thereby they are iso-electronic species. If the + charge is more, then the ionic radius will be small.

Always remember – charge means adding of electrons. These electrons travel in outermost shells.

Now, when an atom will lose electrons, it will cling tightly to the electrons left with it, thus further reducing the ionic radius.

The Mg+2 has least ionic radius. It act be consistent with Pauling radii and use for calculating the ionic radius as magnesium +2.

It has been separated from the crystals and will be less than sum of soft sphere radii.

Answer 2

ince all of the ions have 10 electrons thereby they are iso-electronic species. If the + charge is more, then the ionic radius will be small.

Always remember – charge means adding of electrons. These electrons travel in outermost shells.

Now, when an atom will lose electrons, it will cling tightly to the electrons left with it, thus further reducing the ionic radius.

The Mg+2 has least ionic radius. It act be consistent with Pauling radii and use for calculating the ionic radius as magnesium +2.

It has been separated from the crystals and will be less than sum of soft sphere radii.