What is the most important factor in ionization of a gas?

A) electrolysis
B) electron impact
C) ionization
D) electroplating

Ionization

The process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons.

Important Factor

A significant element or aspect that contributes to a result or outcome.

Gas

A state of matter consisting of particles that have neither a defined volume nor defined shape, typically able to expand freely.