Question

what are ion?answer it acording to chemistry

Answer 1

An ion is an atom or group of atoms in which the number of electrons is different from the number of protons. These are 2 types:
Cation: A positively charged ion
Anion: A negatively charged ion

Eg: Aluminum - Al+3 (cation), Chloride - Cl-1 (anion)

Answer 2

an atom or molecule with net electric charge due to loss or gain of one or more electron