Ions

[Lizbeth Crisanto 3D]

How can we arrange ions according to ionic radius?

[Emily Ngo 1E]

Hi Lizbeth,
We arrange ions according to ionic radius by looking at the charge. Cations are smaller than anions. The greater positive charges of an ion make it smaller while ions with a negative charge have a larger ionic radius because electrons are being added.

[Hannah Jin 1J]

Ionic radius is arranged similar to atomic radius in the periodic table: it increases down and decreases across the table. However, notice that cations are smaller than their parent ions because they lose electrons and anions are larger than their parent ions because they gain electrons.

[Kathryn Heinemeier 3H]

it's similar to how you would arrange regular molecules you just have to account for cations being smaller because they are losing electrons while anions are larger because they are gaining them.