Question 83

Which one the following ions has the highest value of ionic radius?

Name: Which one the following ions has the highest value of ionic radius?
Uploaded: 2026-06-25T15:24:41.421618+05:30
Duration: 2 min 20 s
Description: Which one the following ions has the highest value of ionic radius?

Solution

$$Li^+$$ and $$B^{3+}$$ have only 2 electrons (1 shell), making them significantly smaller than the others.

$$F^-$$ and $$O^{2-}$$ both have 10 electrons (2 shells). Species that share the exact same number of electrons are called isoelectronic species.

For isoelectronic species, the ionic radius is inversely proportional to the atomic number (nuclear charge):

$$\text{Ionic Radius} \propto \frac{1}{\text{Nuclear Charge (Number of Protons)}}$$