Okay kiddo, so you know that molecules are made up of atoms that stick together to form different shapes, right? Well, imagine those atoms are like puzzle pieces, and they can only fit together in certain ways.
Now, sometimes there are molecules called ligands that have special shapes that can attach to other molecules, kind of like a key fitting into a lock. These ligands can attach to different parts of a molecule, but sometimes they can attach in different ways, even though they still have the same atoms.
This is called ligand isomerism. It's like having two different ways to solve a puzzle even though all the pieces are the same. In one isomer, the ligand might attach to a metal ion on one side, but in another isomer, it might attach on a different side. This can change how the molecule behaves and reacts with other molecules.
So basically, ligand isomers are like two different versions of the same puzzle piece that can attach to other molecules in slightly different ways, even though they have the same atoms. Does that make sense?