Question

answer each question.
please note: you can answer each question only once.
when youve answered a question, you can go to the next question.
you can scroll back to see your answers.
good luck!
how can an ion be created?
by adding or extracting electrons.
by adding or extracting neutrons.
by adding or extracting protons.
ok

Explanation:

Step1: Recall definition of ion

An ion is an atom or molecule with a net electric charge due to loss or gain of electrons.

Step2: Analyze each option

• Adding or extracting protons changes the element (as proton number defines the element), not creating an ion.
• Adding or extracting neutrons changes the isotope (as neutron number affects isotopic form), not creating an ion.
• Adding or extracting electrons changes the electron - proton balance. When electrons are lost (extracted), there is a positive charge (cation); when electrons are gained (added), there is a negative charge (anion), which creates an ion.

Answer:

By adding or extracting electrons.