How does some molecules have a total electrical charge on atoms and acts like ionsin a chemical reactions.How are they formed waht are the special charcteristics their consistuents posses??
Ion is a chemical species having charge on it. It can be mono atomic or poly atomic.
mono atomic ion...
F-, Cl-, Na+, Mg2+
Polyatomic ion...
SO32-
If you see SO3 is a molecule and if it get 2 extra electrons it becomes SO32- ion.