Question

Define hydrated radius?

Answer 1

Hydrated radius :

• It is defined as the radius of ion and closely bound water molecules.
• It is inversely related to the atomic radius of an element.
• The ions with larger size and low charge hold water molecules less tightly and therefore have a smaller atomic radius.
• Ions of smaller size and higher charge hold water molecules less tightly and have a smaller hydrated radius than small ions with a higher charge.
• The ionic radius increases from top to bottom, whereas the hydrated radius decreases.