Whats the difference between a negative ion and its neutral ion?

Answer 1

A negative ion has one or more electrons, so it carries a negative charge wich depends on the number of electrons it gained. A neutral ion did not gain or lose any electrons, so it carries no charge, therefore being neutral.

Answer 2

A negative ion has gained one or more electrons, resulting in a negative charge, while its neutral ion has an equal number of protons and electrons, resulting in no overall charge. Negative ions are typically more reactive or unstable than their neutral counterparts due to their excess electrons.

Answer 3

An ion is an atom with electrical charge, a cation or an anion.
Isotopes are atoms of the same element but having different number of neutrons.