[chemistryamateur]

How can you tell whether or not something is a strong electrolyte?

[Jiro]

The solution has got to have alot of ions. NaCl_s ionizes into Na⁺ and Cl^- and now it should be conductive. I am not sure of exactly how to determine if something is a strong electrolyte but i can tell you whether it is stronger in comparision to another sample... For acids or bases you could look at the Ka or Kb values for the acids or bases you could use that as a scale for degrees of strength in electrolytes because the larger the OH^- and H⁺ ...that is one way to see.

[Borek]

In general - substances that are strongly ionic are strong electrolytes when dissolved. The more covalent the substance, the weaker electrolyte it gives when dissolved.

Or from other perspective - substances taht dissociate more give stronger electrolytes.