Question

qe 3. an ion is formed
q4 by either adding or subtracting neutrons from the atom
q4 by either adding or subtracting electrons from the atom
q4 all of the above are true.
q4 by either adding or subtracting protons from the atom.
clear all

Explanation:

An ion is formed when an atom gains or loses electrons. Adding or subtracting neutrons changes the isotope of an atom, and adding or subtracting protons changes the element itself. Only electron - transfer forms an ion.

Answer:

By either adding or subtracting electrons from the atom.