Ideal amount of negative ions

Positive ions are smaller than atoms from which they are formed, but negative ions are larger than the atoms from which they are formed . Explain why this is so? - Quora

8 Ways to Expose Yourself to Earth's Healing Negative Ions — PHYTO5 Swiss Quantum Energetic Skincare

OUNONA 1pc Negative Ion Air Purifier Portable Air Purifier Toilet Air Cleaner (US Plug)

What is Tourmaline?

What is a negative ion and its characteristics? - Quora

How to Choose the Best Air Ion Counter

What is Negative Ions and Benefits - Renke

High-Density Ionizer/Negative Ion Generator - Medical Ion Mini with Ion Detector

About Negative Ion Products